The Forest Stewards of Diak Lay East Kalimantan

Total Page:16

File Type:pdf, Size:1020Kb

The Forest Stewards of Diak Lay East Kalimantan Page 1 of 7 COMMUNITY FORESTRY CASE STUDY SERIES FU001/95 RECOFTC REGIONAL COMMUNITY FORESTRY TRAINING CENTER & ASIA FOREST NETWORK THE FOREST STEWARDS OF DIAK LAY EAST KALIMANTAN Prepared By Cynthia Josayma ASIA FOREST NETWORK Based on: M. Poffenberger and B. McGean (Eds.). 1993. Community and Forest Management in East Kalimantan: Pathway to Environmental Stability. "The Forest Stewards of Diak Lay." This Case study has emerged is a cooperative effort between the Regional Community Forestry Training Center (RECOFTC) and the Asia Forest Network. RECOFTC's main purpose is to organize and provide training in community forestry in the Asia Pacific region. In support of this mandate, RECOFTC undertakes and facilitates relevant research, technical assistance, exchange of information, workshops, and linkages with appropriate institutions and individuals. The Asia Forest Network supports the role of communities in protection and sustainable use of the region's natural forests. The emphasis of the network's research includes the ecology of natural regeneration, the economics of non-timber forest product systems, conflict resolution, and the community organizations and institutional arrangement that support participatory management. The lessons stemming from this research are used to inform field implementation procedures, reorient training, and guide policy reform. We would like to acknowledge the funding support for the development of the case study. Our thanks to OSDA Forest Service, USAID, Asia Bureau, Natural Resource Management Programme, and SEADO/ODA (Southeast Asia Development Division/ Overseas Development Administration). BACKGROUND Indonesia possesses 60% of all forested lands in Southeast Asia and an even greater proportion of the Page 2 of 7 remaining primary rain forests. Indonesia's forests are not only rich in biological diversity, but they also support millions of indigenous peoples who have historically resided in the outer islands, as well as a growing number of migrants from densely populated Java. The province of East Kalimantan is currently the center of the commercial timber industry, supplying nearly 25% of the nation's commercial needs. The timber is produced by more than 100 concessionaires currently operative in the province. More than 50% of the province was leased to concessionaires in the early 1970s. Communities such as at the case study site, Diak Lay, had changed little until the past 20 years, when logging concessions began operation around their ancestral lands. Forest utilization practices by concessionaires, developers, migrants, and local populations have led to a rapid process of forest degradation, especially in areas near roads and urban centers. While national planners view forest utilization as a way to stimulate economic growth and as a resource to Java's growing population, indigenous peoples view the forest as their ancestral home. Forest dwellers such as the Wehea Dayaks who reside in Diak Lay Possess a thorough knowledge of forest ecology and regenerative processes based on centuries of experience with Sweden cultivation. The case study examines how traditional forest Use systems differ from commercial timber operations and presents the Dayak view of how forest resources might be better managed in the future. CASE STUDY QUESTIONS 1. How do the Diak Lay determine the suitability of now swidden fields? 2. Why do the Diak Lay reserve strips of natural forestland? 3. Which agricultural initiatives have the Diak Lay adopted to meet their economic needs? 4. How have different concessionaires worked with the Diak Lay? THE FOREST STEWARDS OF DIAK LAY Migration of the Dayaks The Wehea Dayaks have a sophisticated understanding of the forest and river ecosystems. It is believed that the Wehea Dayaks migrated from the mountains of the Apo Kayam into the upper reachers of the Mahakam River over the past 400 years. As their communities have grown, they have moved progressively downstream, establishing new villages. In 1870, they sited a village approximately 10 km upriver from the current settlement of Diak Lay, constructing a large, traditional communal long house. By 1945, however, the village had become too large, and the council of elders decided to relocate the families into four new communities along the Telen and Wahou River. Diak Lay was one of the larger new communities, with 52 households The village council met to demarcate communal lands among the groups. The area allocated to Diak Lay was bounded to the north and south by streams feeding the Wahau. Since no other communities resided in the forest area or had prior claims, the community extended its range to the east and west for hunting and now swidden fields During the past 120 years, the forests of Diak Lay have undergone a series of changes and current patterns. Initially, both sides of the Telen River were under primary forest. In the early 1900s, the Wahea Dayaks began opening fields along the bank of the river. By the 1920s, these abandoned fields along the river had been left to fallow and regenerate as secondary forests and fruit gardens. In 1945 the village of Diak Lay was established on the opposite bank. Over the next four decades, swidden fields were extended progressively into the primary forest, up to 6 km from the village. Village leaders estimate that the traditional community lands of Diak Lay comprise approximately 920 km 2. Most of the area recognized as community land serves as territory for hunting and gathering. Lands more intensively managed for active, followed swidden fields, banana, rattan, or mixed fruit cordons, and boundary forests comprise at most 60 km 2 closest to the village, or less than one-tenth of the community's land. Page 3 of 7 LAND USE SYSTEM Selection of Swidden Sites The Wehea Dayaks practice a number of agricultural, agroforestry, and forest management systems. Land resources are broadly divided: those used for swidden fields, either active or in a phase of successive regeneration; those converted to long-term use as banana, mixed fruit, or rattan gardens; and those permanently under largo or smaller tracts of secondary or primary forest. The selection of swidden sites (ladangs) occurs during a community meeting. During this meeting, possible sites are proposed by the village leaders. Other community members may also propose sites. Each proposal must be supported by a description of the characteristics which qualify the site as suitable for agriculture. The primary consideration in selecting a prospective site is whether sufficient natural forest regeneration and soil fertility recovery have occurred since it was last opened for agriculture. In general, if a forest has regenerated for more than 10 years, it is considered as being adequately rejuvenated in terms of soil fertility to support agriculture. Potential plots must be at least 1 ha in order to support several families. Most plots have previously boon used for swidden and are selected in regenerating secondary forests. The site histories and past productivity are considered. Once a field site has been proposed during the communal meeting, the committee visits the area to determine whether the site meets all the requirements. If so, the group will attempt to divide the area equally among the community members interested in forming it. While primary forests often give somewhat higher yields initially, they are generally avoided due to the additional work involved in clearing larger trees. Fields are often opened by cooperative groups of 10 families. An adult male and female from each household travel to the site and provide one full day of labor to each member of the group of 10. This arrangement is usually enough to clear most of the larger trees and shrubs on the plot Homegardens The Wehea Dayak households have traditionally maintained several typos of gardens. The kebun gardens, are primarily dedicated to the production of fruit and rattan for income. Growing populations, interactions with other ethnic groups, and a desire to generate more produce for cash have stimulated the expansion of these gardens in Diak Lay. Generally planted on communal lands, once an individual has invested significant labor in planting fruit trees or rattan, the community recognized his/her rights to the produce. The three types of gardens are differentiated according to primary produce, including rattan ( kebun rotan ), bananas ( kebun pisang ), and mixed fruit (kebun buah ) (Figure 1). Most gardens also shelter a wide variety of additional domesticated and natural forest species. Rattan gardens were started in the early twentieth century in response to expanding commercial demands. Once on old Swidden is used for rattan or mixed fruit, the investment and care is substantial enough that it is rarely reverted bock to a field. Rattan is usually planted in secondary forests with good canopy closure. The most serious threat to rattan gardens is fire. The East Kalimantan fire of 1962 caused extensive damage to the rattan gardens of Diak Lay. Although rattan gardens at full productivity con generate up to 5,000 kg/ha of cane annually, in Diak Lay most rattan gardens produce on overage only 500 kg/ha due to damage resulting from the fires of the 1960s. Most of the rattan supply is purchased by a Kutai agent who owns the village store and handles trade in many forest products. Generally, operators of river taxis purchase rattan from family producers. Villagers and traders report that rattan markets and prices are uncertain. Demand for rattan is often driven by orders from furniture market and exporters in large urban centers. Nonetheless, most families in the village might earn US$75-150 per year from rattan. While rattan is the primary product, these gardens contain a diverse mix of native and exotic species. Research in Diak Lay has documented more than 90 different species of climbers, herbs, trees, and other plants, many of which are useful subsistence goods. The prospects for sustaining rattan culture in Diak Lay ore promising.
Recommended publications
  • RSPO Public Summary Report Template
    Roundtable on Sustainable Palm Oil Public Summary Report Report no. : RSPO P&C – IC 19113 against the RSPO Prin- 2013 INA-NI, 2016 NG-NI, 2017 Generic, 2018 ciples & Cri- 2018 MY-NI, 2015 GH-NI, 2015 teria RSPO Supply Chain Certification Standard, 2014 (Rev. June 2017) Group Certification of FFB Production 2016 Rev.2018 RSPO Supply Chain Certification Standard, 2014 (Rev. June 2017) PT Dharma Satya Nusantara Palm Oil Mill 6 East Kutai District, East Kalimantan Date of assessment : September 02 to 06, 2019 Report prepared by: Dian S Soeminta (RSPO Lead Auditor) Certification decision by: I Nyoman Susila (Director of TUV Rheinland Indonesia) Certification Body: PT TUV Rheinland Indonesia Menara Karya, 10th Floor Jl. H.R. Rasuna Said Block X-5 Kav.1-2 Jakarta 12950,Indonesia Tel: +62 21 57944579 Fax: +62 21 57944575 www.tuv.com/id Accreditatation number : ASI-ACC-061 & 06 June 2024 TABLE OF CONTENTS 1.0 SCOPE OF CERTIFICATION ASSESSMENT. .............................................................................................. 3 2.0. DESCRIPTION OF CERTIFIATION UNIT ..................................................................................................... 3 2.1 Location .................................................................................................................................................. 3 2.2. Maps ...................................................................................................................................................... 3 2.3. Supply Base Composition ....................................................................................................................
    [Show full text]
  • Who Counts Most? Assessing Human Well-Being in Sustainable Forest Management
    FA-CIFOR-Tool8Cover 6/15/99 8:25 AM Page 1 8 Who Counts Most? Assessing Human Well-Being The Grab Bag: Supplementary Methods for Assessing Human Well-Being Human Assessing for Methods Bag: Supplementary Grab The in Sustainable Forest Management Who Counts Most? Assessing Human Well-Being in Sustainable Forest Management presents a tool, ‘the Who Counts Matrix’, for differentiating ‘forest actors’, or people whose well-being and forest management are intimately intertwined, from other stakeholders. The authors argue for focusing formal attention on forest actors in efforts to develop sustainable forest management. They suggest seven dimensions by which forest actors can be differentiated from other stakeholders, and a simple scoring technique for use by formal managers in deter- mining whose well-being must form an integral part of sustainable forest management in a given locale. Building on the work carried out by the Center for International Forestry Research (CIFOR) on criteria and indi- cators, they present three illustrative sets of stakeholders, from Indonesia, Côte d’Ivoire and the United States, and Who Counts Matrices from seven trials, in an appendix. 8The Criteria & Indicators Toolbox Series FA-CIFOR-Toolbox8-11.05 6/15/99 7:51 AM Page A2 ©1999 by Center for International Forestry Research Designed and Printed by AFTERHOURS +62 21 8306819 Photography Gorilla g. beringei by Tim Geer (WWF) Waterfall, Indonesia by Susan Archibald Kenyah hunter, Tanah Merah, Indonesia by Alain Compost Dendrobium sp. (Wild orchid) by Plinio Sist The authors wish to acknowledge the contribution of Ms Rahayu Koesnadi to quality control of this manual.
    [Show full text]
  • Volume 13, No. 2, 1981
    BORNEO RESEARCH BULLETIN I INFORElATION FOR AUIHORS Research Notes: These should be concerned with a smumy of research on a particular subject or geographical area; the results of recent b1. 13, No. 2 Septgnber research; a review of the literature; analyses of the state of.research; i and so forth. Research Notes dizfer from other contributions in that Notes fran the Editor: "Feast and Famine;" List the mterial covered should be based on original research or the use of Fellows; Contrl tions for-& support of the of judgplent, experience and personal howledge on the part of the Borneo Research Cbuncil; Financial Report .... author in the preparation of the material so that an original conclu- sion is reached. Research Notes ,Origins Borneo Brief Connnmications: These differ from the foregoing in that no S- Notes on the of the 'Fmm" of --CTorlgmal wnclusions are drawn nor any data included based on original .................CarlL.Hoh Wonm, Men, and Time in the Forestls of East Kali- reskch. They also differ in consisting primarily of a statanenE of -tan ......... Carol J. Pierce Colfer research intentions or a sum~aryof news, either derived from private Tne Journey to Paradise: Amerary Rites of the sources or smmrized from items appearing in other places that my Benuaq Dayak of East Kalimantan.. Andreas Massing not be readily accessible to the readers of the Bulletin but which On Nya a8 Direct Quotation Her in Bruneilvblay They w~~cludedwith have an interest and relevance for them. Linda Amy Kimball the contributor's name in parentheses following the itan to indicate ............... the source.
    [Show full text]
  • Introduction -- History and Conceptual Framework
    INTRODUCTION History and Conceptual Framework Carol J. Pierce Colfer and Yvonne Byron, with Ravi Prabhu and Eva Wollenberg Confusion and dismay are rampant among those concerned about human and environmental issues in the tropics, and with good reason. Forests are being degraded at apparently ever-increasing rates, and human welfare in for- ested areas is remaining at a constant level at best, more often deteriorating. Many people—researchers, environmentalists, and policymakers of various hues—are trying to address these problems. This book represents the evolu- tion of one cooperative effort to understand and develop mechanisms for dealing with these interrelated problems, and the authors propose some sug- gestions for improving our future efforts. In our research, we have asked ourselves one fundamental question: how can we create conditions that allow local people who live in and around for- ests to maintain the valued aspects of their own way of life and to prosper while still protecting those forests on which they, and perhaps the rest of us, depend? To answer that question, we needed first to identify the conditions that contribute to sustainable forest management (SFM) in general and to the well-being of forest-dwelling people in particular. Satisfied that we had a good grasp of the most important conditions (see later), we set out to exam- ine their relationship to sustainability. This examination is the central theme of this book. Central issues of concern include the identification and roles of relevant stakeholders (including gender and diversity, discussed in Section 1, and the relevance of a “conservation ethic,” discussed in Section 2), security of intergenerational access to forest resources (Section 3), and rights and responsibilities to manage forests cooperatively and equitably (Section 4).
    [Show full text]
  • X. Paleontology, Biostratigraphy
    BIBLIOGRAPHY OF THE GEOLOGY OF INDONESIA AND SURROUNDING AREAS Edition 7.0, July 2018 J.T. VAN GORSEL X. PALEONTOLOGY, BIOSTRATIGRAPHY www.vangorselslist.com X. PALEONTOLOGY, BIOSTRATIGRAPHY X. PALEONTOLOGY, BIOSTRATIGRAPHY ................................................................................................... 1 X.1. Quaternary-Recent faunas-microfloras and distribution ....................................................................... 60 X.2. Tertiary ............................................................................................................................................. 120 X.3. Jurassic- Cretaceous ........................................................................................................................ 161 X.4. Triassic ............................................................................................................................................ 171 X.5. Paleozoic ......................................................................................................................................... 179 X.6. Quaternary Hominids, Mammals and associated stratigraphy ........................................................... 191 This chapter X of the Bibliography 7.0 contains 288 pages with >2150 papers. These are mainly papers of a more general or regional nature. Numerous additional paleontological papers that deal with faunas/ floras from specific localities are listed under those areas in this Bibliography. It is organized in six sub-chapters: - X.1 on modern and sub-recent
    [Show full text]
  • Fe3120cc88ff945df2a03d16578e3c3e.Pdf
    Introduction Assalamu'alaikumWarahmatullahiWabarakatuh Alhamdulillah, praise to Allah SWT, God The Almighty on the implementation of the preparation of the book "The Study of Investment Opportunities in East Kalimantan Province (Singkong Gajah / Cassava Elephant, Waste Palm Oil and Coconut)". The purpose and goal is as sufficient information about the potential and investment opportunities in East Kalimantan, especially in commodity Singkong Gajah (cassava elephant) as a raw material of bio‐ethanol, waste palm oil as an ingredient of wood pellets and coconut as a source of bio‐fuel as well as reference / referral in order to promote the potential and investment opportunities that becomes more targeted, effective, and efficient. The publication of the Book of “The Study of Investment Opportunities in East Kalimantan Province (Cassava Elephant, Waste Palm Oil and Coconut) 2015” is aimed that it can provide the information about the investment potential of the industry especially to the commodity of Singkong Gajah (cassava elephant) as a bio‐ethanol, waste oil as an ingredient of wood pellets and coconut as a source of bio‐fuel in East Kalimantan through Investment and Licensing Agency (BPPMD). We realize though this book has been prepared as well as possible, shortcomings and negligence and error is likely to occur, to the criticisms and suggestions that are build for the improvement of Book Study of Investment Opportunities in East Kalimantan Province (Singkong Gajah / Cassava Elephant, Waste Palm Oil and Coconut) 2015. This will be received with pleasure, I hope this book of Investment Opportunities Study has beneficiary as we would expect. Wassalamu'alaikumWarahmatullahiWabarakatuh. KEPALA BPPMD PROVINSI KALIMANTAN TIMUR Diddy Rusdiansyah A.D, SE, MM Pembina Utama Muda Nip.
    [Show full text]
  • Cenozoic Carbonates in Borneo: Case Studies from Northeast Kalimantan
    PERGAMON Journal of Asian Earth Sciences 17 (1999) 183±201 Cenozoic carbonates in Borneo: case studies from northeast Kalimantan M.E.J. Wilson a, *, J.L.C. Chambers b, 1, M.J. Evans c, 2, S.J. Moss a, 3, D.S. Nas d aSE Asia Research Group University of London, Dept of Geology, Royal Holloway, Egham, Surrey TW20 0EX, UK bLASMO Runtu Ltd, Jakarta, Indonesia cMaersk Oil Indonesia Maratua AS, Jakarta, Indonesia dGeological Research and Development Centre, Bandung, Indonesia Received 4 September 1997; received in revised form 20 July 1998; accepted 12 August 1998 Abstract Modern and Tertiary carbonate production is, and was, extensive and diverse in the seas surrounding Borneo, and mirrors the variety of carbonate depositional systems seen in SE Asia. The availability of favourable conditions for carbonate sedimentation around Borneo was related to a combination of factors, including tectonic setting, the formation of large basinal areas, dierential subsidence providing shallow marine areas, a tropical climate and a range of local factors, such as currents or limited clastic input. A detailed sedimentological and diagenetic study was undertaken of middle Eocene to Plio±Pleistocene carbonates which developed in the north Kutai Basin and the Mangkalihat Peninsula, northeast Kalimantan. Carbonate sedimentation in this area occurred in a range of depositional environments, from mixed carbonate clastic shelves, localised and transient shoals or reefs, a variety of platform top settings to deep water redeposited carbonates. An understanding of carbonate depositional environments, spatial facies relationships, and diagenesis is essential in order to develop models for these carbonates which can be used as predictive tools in the subsurface.
    [Show full text]
  • Forest Chatter March 2016
    Issue 15 | March 2016 BOS Australia | + 61 2 9011 5455 | PO Box 3916 Mosman NSW 2088 From the President… Last newsletter we shared our plans organisations in Indonesia. BOS orangutans are relocated to other for completing some major projects Australia was a major sponsor of habitats rather than being brought in Borneo and I am delighted to the course. into our care centres. report that they have gone well. At the same time Lou and Janet Last quarter BOS Indonesia The Special Care Unit is now hosted 4 volunteers who visited relocated 48 orangutans. It appears complete and hopefully our 50 non- Samboja to help with enrichment that there may be many more this releasable orangutans will soon move projects and have some rewarding quarter. The problem of course is in. Tom Bertinshaw, a seasoned orangutan encounters. More finding suitable new habitat but this project management expert and about how you can be experience rescue and release method avoids new BOSA volunteer, spent a few this amazing program inside this the Orangutans spending time in weeks in Samboja supervising the newsletter. enclosures. We sometimes feature complicated construction of the The impact of the devastating relocation stories on Facebook and waste management wetlands, with forest fires last year has resulted in it is always heartwarming news to considerable remote assistance an increase in affected orangutans see the orangutans rescued from from the team back in Australia. arriving at our care centres. Our next dangerous areas and moved into We are just waiting for rain to fill project is completion of the baby safer territory.
    [Show full text]
  • Local Forest Management in Indonesia: a Contradiction Between National Forest Policy and Reality
    International Review for Environmental Strategies Vol.1, No.1, pp. 175 – 191, 2000 ©Institute for Global Environmental Strategies All rights reserved. Article Local Forest Management in Indonesia: A Contradiction Between National Forest Policy and Reality Martinus Nanang*a and Makoto Inoueb Received October 31, 1999, accepted April 21, 2000 Local Forest Management (LFM) is an important alternative strategy for conserving the for- est, and for allowing both forest dwellers and larger stakeholders to benefit from the forest. However, in many cases national policies do not favor LFM. This article critically reviews Indonesia’s national forest policies and indicates how they contradict the principles and prac- tices of Local Forest Management. For this purpose, an excerpt from a research report on forest management by a local community in East Kalimantan is provided. This includes natural re- source tenure, land classification and utilization, forest product utilization and the negative impact of industrial tree plantations. A review of LFM policies, land and forestry laws and the prospect of forestry reform in the future is provided after a discussion of the local situation. This article argues that local people are able to manage the forest in a sustainable way based on their traditions. Accordingly, it is important to have a fair evaluation of customary laws, to avoid uniform application of forest development and to recognize the reality of land use and the socioeconomic conditions as criteria for forest land classification. The involvement of local people and NGOs should be clearly defined in the form of decrees or laws. Keywords: Local forest management, Forest policy, Forest utilization, Natural resource tenure, Participation.
    [Show full text]
  • RSPO Public Summary Report Revision 8 (Mar /2019)
    PF441 RSPO Public Summary Report Revision 8 (Mar /2019) RSPO PRINCIPLE AND CRITERIA – 4th ANNUAL SURVEILLANCE ASSESSMENT/ASA 4 Public Summary Report Golden Agri Resources Ltd.: Client company Address: c/o 108 PasirPanjang Road, #06-00 Golden Agri Plaza, Singapore 118535 Certification Unit: PT. Tapian Nadenggan – Jak Luay POM Location of Certification Unit: Head Office: Sinar Mas Land Plaza, Tower II, 30th Floor, Jl. MH Thamrin No. 51, Jakarta 10350 Site address: Jakluay Village, Muara Wahau District, Kutai Timur Regency, Kalimantan Timur Province, Indonesia Page 1 of 165 PF441 RSPO Public Summary Report Revision 8 (Mar /2019) TABLE of CONTENTS Page No Section 1: Scope of the Certification Assessment ....................................................................... 4 1. Company Details ........................................................................................................... 4 2. Certification Information................................................................................................. 4 3. Other Certifications ........................................................................................................ 4 4. Location(s) of Mill & Supply Bases ................................................................................... 5 5. Description of Supply Base ............................................................................................. 5 6. Plantings & Cycle ........................................................................................................... 5 7. Certified
    [Show full text]
  • Can Gaharu Be Harvested Sustainably? a Case Study from East Kalimantan, Indonesia
    Journal of Ecological Anthropology Volume 1 Issue 1 Volume 1, Issue 1 (1997) Article 4 1997 Can Gaharu Be Harvested Sustainably? A Case Study from East Kalimantan, Indonesia Krystof Obidzinski University of Georgia, Department of Anthropology Follow this and additional works at: https://scholarcommons.usf.edu/jea Recommended Citation Obidzinski, Krystof. "Can Gaharu Be Harvested Sustainably? A Case Study from East Kalimantan, Indonesia." Journal of Ecological Anthropology 1, no. 1 (1997): 28-35. Available at: https://scholarcommons.usf.edu/jea/vol1/iss1/4 This Research Article is brought to you for free and open access by the Anthropology at Scholar Commons. It has been accepted for inclusion in Journal of Ecological Anthropology by an authorized editor of Scholar Commons. For more information, please contact [email protected]. 28 Georgia Journal of Ecological Anthropology Vol. 1 1997 Can Gaharu Be Harvested Sustainably? A Case Study From East Kalimantan, Indonesia Krystof Obidzinski Department of Anthropology University of Geogia Introduction Since the late 1980s, non-government organizations supply of forest products = sustainable management of the (NGOs), agricultural extension workers, and international species) (Fearnside 1989). Eventually, it became clear that development agencies have devoted increasingly more atten- economic/ecological compatibility was the exception rather tion to the potential for managing and sustainably exploiting than the rule and that rural communities exhibit a distinct non-timber forest products (hereafter NTFPs). The underly- tendency to over-exploit non-timber forest resources (Kahn ing obejctive behind the efforts to promote NTFPs on the 1988; Nepstad et al. 1992; Bodmer et. al 1993; Padoch 1989; national and international levels was to create an alternative Bowcer 1992, Peluso 1992a; Peluso 1992b).
    [Show full text]
  • Berita Sedimentologi [Pick the Date]
    Berita Sedimentologi [Pick the date] Tracing the Provenance of the Devonian Limestone of Telen River, East Kalimantan Herman Darman PT. Eksindo Pratama, Jakarta, Indonesia (currently with Petronas Carigali, Kuala Lumpur, Malaysia) INTRODUCTION H. Witkamp found an outcrop with Devonian Limestone in East Kalimantan in 1925. In 1989, an expedition run by Institute of Technology Bandung (ITB) reinvestigated the outcrop and concluded that the Devonian Limestones in Telen River were boulders within a Permian formation (Arief et al., 1989). This paper gives a wider overview on the distribution of Devonian rocks in Asia Pacific region and discusses their possible origin. Based on the distribution map of Devonian rocks in the region, the Devonian limestone in Borneo is very isolated. The closest Devonian limestones are about more than 2000 km away (Figure 1). Probably the Devonian limestone in Telen River has been separated away from its origin by significant tectonic movement. There are several theories and models related to the formation history of this area, which makes it very complex. To understand the origin of these limestones, the geology needs to be restored to their time and place of deposition of the Devonian limestone. Figure 1: Distribution map of Devonian Rocks in Asia-Pacific region, in the vicinity of Telen River, East Borneo (based on several sources e.g. IHS, Tellus etc.) Number 47 – May 2021 Page 57 of 82 Berita Sedimentologi [Pick the date] DEVONIAN ROCK DISTRIBUTION IN ASIA penetrated a metamorphic basement which is PACIFIC interpreted as Devonian in age. Currently, the majority of Devonian rocks are distributed between the Asian and Australian PALEO-SETTING DURING TIME OF continent (Figure 1).
    [Show full text]