DOCSLIB.ORG

Tectonic Setting Seismic Hazard Epicentral Region Depth Profile

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Tectonic Setting Seismic Hazard Epicentral Region Depth Profile U.S. DEPARTMENT OF THE INTERIOR EARTHQUAKE SUMMARY MAP XXX U.S. GEOLOGICAL SURVEY Prepared in cooperation with the Global Seismographic Network e g M6.7 Sumbawa, Indoned sia, Earthquake of 8 November 2009 i R u a l a P - Tectonic Setting u Epicentral Region V I E T N A M P h i l i p p i n e h 100° 110° F a u l t 120° 130° s 110° 112° 114° 116° 118° 120° 122° 124° 126° 128° C A M B O D I A u S u m a t r a y P Palu K Balikpapan H Kalimantan 2000 1963 1923 P H I L I P P I N E S I L P h i l i p p i n e I A N D A M A N P Barat Kalimantan Timur Sumbawa Region P B a s i n Sulawesi Tengah Gulf I 1998 S E A N 10° 10° of S O U T H E 08 November 2009 8:41:44 UTC Thailand T 2° 2° C H I N A R Palangkaraya 1965 N E Kalimantan Tengah A N W H 1919 S E A A G C 8.315° S., 118.697° E. L U A O H P R Kalimantan Depth 18.3 km T Selatan M19w38 = 6.7 (1U94S8GS) SUNDA PLATE Sulawesi Bandjermasin Maluku Selatan B R U N E I 15 km (10 miles) 1N9N50W of Raba, Sumbawa, Indonesia M 310 km (1A9m0b moniles) ENE of Mataram, Lombok, Indonesia A C e l e b e s L Kendari 2001 A B a s i n 330 km (205 miles) W of Ende, Flores, Indonesia Y S u m a t r a F a u l t 4° 4° S A I N D O N E S I A 2004 I 1335 km (830 miles) E of JAKARTA, Java, Indonesia I S A Y A L A M S I N G A P O R E S u 0° m Borneo 0° Makassar 2006 1914 a MOLUCCA 2005 tr a SEA Enggano I N D O N E S IPLATEA BIRD'S HEAD A' 1797 PLATE 6° 6° 1950 1927 AUSTRALIA J a v a 1969 PLATE J A VA S E A 1998 Semarang 1934 1833 1996 1964 1995 BANDA SEA MAOKE Jawa 1966 Greater Sunda Islands B A N D A S E A 1990 1982 I PLATE PLATE Barat Surabaya 1911 1952 1918 n Jawa Tengah v 1954 1917 1983 e Java Lesser Sunda Islands Yogyakarta Jawa Timur 1931 s 1949 t 2004 1977 i Yogyakarta TIMOR T I M O R - L E S T E 8° 8° g 1918 a PLATE 1992 1944 t Bali Dili 10° o 10° Mataram S U Denpasar r 60 N D A 1953 ( J AV 1916 Nusa Tenggara Barat Nusa Tenggara Timur R A) T R 1937 mm/EyPr ICENTRAL REGION E N C H East Timor i 1938 d g 1943 e 75 EXPLANATION 1926 1937 N o r t h mm/yr A u s t r a l i a n AUSTRALIA PLATE B a s i n Mag ≥ 7.0 10° Kupang 10° 1994 1994 0 - 69 km AUSTRALIA PLATE 70 - 299 1977 I N D I A N O C E A N 300 - 600 20° E x m o u t h Plate2 0B° oundaries P l a t e a u 12° 12° 100° Wallaby 110° 120° 130° Subduction W h a r t o n Plateau B a s i n RELATIVE PLATE MOTIONS Scale 1:20,000,000 Transform EXPLANATION 1921 A 0 205 410 820 1,230 1,640 Divergent In the region of this earthquake, the Australia Plate Kilometers Earthquake Magnitude moves northeastward with respect to the Sunda Plate Others at about 75 mm/yr. 5.50 - 5.99 Andaman Faults 14° 6.00 -1 46°.99 Rupture Area (Year) Western 7.00 - 7.99 Australia Depth Profile 8.00 - 8.99 Seismic Hazard 110° 112° 114° 116° 118° 120° 122° 124° 126° 128° Distance (km) 100° 110° 120° 130° Scale 1:6,641,045 9.00 - 9.99 A (South) A' (North) -500 -400 -300 -200 -100 0 100 200 300 Batdambang Thailand Vietnam 0 105 210 420 630 840 Significant Earthquakes Mag >= 7.0 Cambodia Buon Me Thuot Earthquake Depth 0 0 Phan Da Lat Kilometers Myanmar Phnom Year Mon Day Time Lat Long Dep Mag Bien Hoa Thiet Spratly 0 - 69 Penh Vinh Ho Chi Minh City 1911 07 05 1840 -7.500 117.500 370 7.0 Long Tan An 10° Rach Gia Is. 10° 1914 07 04 2338 -5.500 129.000 200 7.1 Can Tho My Tho 70 - 299 -100 -100 Nakhon Si Bac Lieu Soc 1916 09 11 0630 -9.000 113.000 100 7.1 Trang Thammarat 1917 08 30 0407 -7.500 128.000 100 7.3 300 - 700 Philippines 1918 11 18 1841 -7.168 129.210 35 7.5 ) Songkhla Davao m -200 -200 Alor k Yala Kota 1918 11 23 2257 -8.283 126.567 217 7.1 ( Banda Setar Kota Bandar Kinabalu 1919 08 29 0544 -2.682 127.493 35 7.0 h Aceh Pinang Baharu Seri TECTONIC SUMMARY t 1921 09 11 0401 -13.095 110.177 25 7.3 p Kuala Begawan e Ipoh -300 -300 Kuala Terengganu Brunei The November 8th, 2009 earthquake in the Sumbawa region of 1923 10 07 0329 -1.201 129.486 35 7.2 D Medan Kuantan 1926 09 10 1034 -9.152 110.701 35 7.0 Lumpur New Port Indonesia occurred as a result of thrust faulting on or near a microplate 1927 03 03 0105 -6.617 121.807 35 7.0 Seremban Malaysia boundary within the Sunda plate. Eastern Indonesia is characterized by Melaka 1931 03 28 1238 -7.369 129.491 150 7.2 -400 -400 Manado Singapore Kuching complex tectonics in which motions of numerous small plates are 1934 06 29 0826 -7.083 123.166 647 7.0 Pekanbaru Johor accommodating large-scale convergence between the Australian and 1937 08 11 0055 -9.675 117.533 35 7.2 Baharu Pontianak 0° Indonesia Samarinda 0° Sunda plates. In the region of today's earthquake, the Australian plate 1937 09 27 0855 -9.027 110.802 35 7.0 -500 -500 Padang Balikpapan 1938 06 09 1915 -3.145 126.928 25 7.0 Jambi moves northeastwards with respect to the Sunda plate at a rate of Palangkaraya approximately 75 mm/yr. The convergence across this plate boundary 1938 10 20 0219 -9.268 123.243 35 7.3 Palembang has caused two oppositely oriented thrust zones; in the south, Australian 1943 07 23 1453 -9.500 110.000 90 7.6 -600 -600 Bandjermasin 1944 03 22 0043 -8.500 123.500 220 7.2 Bengkulu Kendari Ambon plate subducts beneath Sunda towards the north at the Java Trench, while 1948 03 01 0112 -3.000 127.500 50 7.1 Tanjungkarang- INDONESIA on the northern side of the eastern Sunda Arc near the location of -500 -400 -300 -200 -100 0 100 200 300 Telukbetung Makassar 1949 04 23 1115 -8.000 121.000 80 7.0 Jakarta November 8th's earthquake, oceanic crust of the Flores Basin subducts 1950 10 08 0323 -3.750 128.250 0 7.5 Bandung Semarang to the south along the Flores Thrust. 1950 11 02 1527 -6.500 129.500 50 7.4 1952 02 14 0338 -7.500 126.500 0 7.2 Yogyakarta Surabaya 1953 06 25 1045 -8.727 123.704 35 7.1 Mataram Earthquakes occur frequently in the region of Sumbawa. In December Dili 1954 02 20 1835 -7.276 124.352 551 7.0 East Timor 1992, a large M7.8 earthquake occurred approximately 350 km to the east of the November 8 event. The 1992 shock and associated tsunami 1963 04 16 0129 -1.172 128.026 35 7.2 10° Kupang 10° 1964 10 18 1232 -7.173 123.809 577 7.0 caused over 2,500 fatalities and leaving 90,000 homeless. Christmas I. 1965 01 24 0011 -2.455 125.965 28.4 8.2 DATA SOURCES REFERENCES EPICENTRAL REGION 1966 06 22 2029 -7.257 124.651 526 7.0 Darwin EARTHQUAKES AND SEISMIC HAZARD Bird, P., 2003, An updated digital model of plate boundaries: Cocos Is. 1969 02 11 2216 -6.791 126.672 425 7.2 USGS, National Earthquake Information Center Geochem. Geophys. Geosyst., v. 4, no. 3, pp. 1027- 80. 1977 08 19 0608 -11.126 118.380 21.3 8.3 NOAA, National Geophysical Data Center 1977 08 27 0712 -8.137 125.326 42.7 7.1 IASPEI, Centennial Catalog (1900 - 1999) and Engdahl, E.R. and Villaseñor, A., 2002, Global Seismicity: Australia 1982 06 22 0418 -7.367 126.048 452 7.5 extensions (Engdahl and Villaseñor, 2002) 1900 - 1999, chap. 41 of Lee, W.H.K., and others,eds., 1983 11 24 0530 -7.508 128.103 181 7.4 HDF (unpublished earthquake catalog) (Engdahl, 2003) International Earthquake and Engineering Seismology, 1990 05 24 2009 -7.356 120.350 588 7.1 Global Seismic Hazard Assessment Program Part A: New York, N.Y., Elsevier Academeic Press, 932 p. 1992 12 12 0529 -8.482 121.844 28 7.8 1994 06 02 1817 -10.411 112.935 34.5 7.8 PLATE TECTONICS AND FAULT MODEL Engdahl, E.R., Van der Hilst, R.D., and Buland, R.P., 1998, 1994 06 02 1817 -10.432 113.191 35 7.1 PB2002 (Bird, 2003) Global teleseismic earthquake relocation with improved trav- 100° 110° 120° 130° 1995 12 25 0443 -6.915 129.187 144 7.1 Finite Fault Model, Chen Ji, UC Santa Barbara (2007) el times and procedures for depth determination: Bull.
Load more

Recommended publications
  • Tsunamigenic Earthquakes
    Fifteen Years of (Major to Great) Tsunamigenic Earthquakes F Romano, S Lorito, and A Piatanesi, Istituto Nazionale di Geofisica e Vulcanologia, Roma, Italy T Lay, Earth and Planetary Sciences Department, University of California Santa Cruz, Santa Cruz, CA, United States © 2020 Elsevier Inc. All rights reserved. Tsunamis, Seismically Induced 1 Fifteen Years of Major to Great Tsunamigenic Earthquakes 3 The Study of Tsunamigenic Earthquakes 3 Megathrust Tsunamigenic Earthquakes 4 The Sunda 2004–10 Sequence in the Indian Ocean 4 Peru 2007 5 Maule 2010 5 Tohoku 2011 5 Santa Cruz 2013 6 Iquique 2014 6 Illapel 2015 6 Tsunamigenic Doublets 7 Kurils 2006–07 7 Samoa 2009 7 Tsunami Earthquakes 7 Java 2006 8 Mentawai 2010 8 Recent Special Cases 8 Sumatra 2012 8 Solomon 2007 8 Haida Gwaii 2012 9 Kaikoura 2016 9 Mexico 2017 9 Palu 2018 9 Conclusions 10 References 10 Further Reading 12 Tsunamis, Seismically Induced Tsunamis are a series of long gravity waves generated by the displacement of a significant volume of water that propagating in the sea, under the action of the gravity force, returns in its original equilibrium position. Differently from the common wind waves, tsunamis are characterized by large wavelengths (ranging from tens to hundreds of km) and long periods (ranging from minutes to hours). Several natural phenomena such as earthquakes, landslides, volcanic eruptions, the rapid change of atmospheric pressure (meteotsunami), or asteroids impacts can be the source of a tsunami; among these, the most frequent is represented by the earthquakes. Most of the very tsunamigenic earthquakes occur nearby the Earth convergent boundaries (Fig.
    [Show full text]
  • Original Pdf Version
    Rhiana Elizabeth Henry Tectonic History Hildebrand Project 1A December 9th, 2016 North America subducted under Rubia Are there modern analogs for Hildebrand’s model of North America subducting under Rubia? In the Geological Society of America Special Papers “Did Westward Subduction Cause Cretaceous–Tertiary Orogeny in the North American Cordillera?” and “Mesozoic Assembly of the North American Cordillera” by Robert S. Hildebrand, the author argues that the North American continent experienced westward subduction under what he calls a “ribbon continent” known as Rubia around ~124Ma. This ribbon continent is composed of multiple terranes both known to be exotic to North America, and terranes that were previously thought to be part of North America. As the seaway between Rubia and North America closed, Hildebrand postulates that North America was dragged underneath with the oceanic crust. This continental material combined with the fluids from the margin caused great amounts of magmatism in the North American Cordillera. Eventually the continental crust broke due to upward buoyancy. This caused slab failure around 75-60 Ma, followed by a reversal of subduction polarity around 53 Ma, with eastward subduction through the mid- Tertiary (Fig. 1). As a way of checking to see if this hypothesis is plausible, I investigated modern geologic settings that are undergoing similar tectonic events. Although these regions are Figure 1: Hildebrand’s model of subduction of not perfect analogies, they share enough North America and Rubia. From Hildebrand, 2009. 1 Rhiana Elizabeth Henry Tectonic History Hildebrand Project 1A December 9th, 2016 tectonic features that Hildebrand’s model appears somewhat less outlandish.
    [Show full text]
  • Philippine Island Arc System Tectonic Features Inferred from Magnetic Data Analysis
    Terr. Atmos. Ocean. Sci., Vol. 26, No. 6, 679-686, December 2015 doi: 10.3319/TAO.2015.05.11.04(TC) Philippine Island Arc System Tectonic Features Inferred from Magnetic Data Analysis Wen-Bin Doo1, *, Shu-Kun Hsu1, 2, and Leo Armada 2 1 Center for Environmental Studies, National Central University, Taoyuan City, Taiwan, R.O.C. 2 Department of Earth Sciences, National Central University, Taoyuan City, Taiwan, R.O.C. Received 18 February 2013, revised 22 November 2013, accepted 11 May 2015 ABSTRACT Running along the middle of the Philippine archipelago from south to north, the Philippine fault zone is one of the world’s major strike-slip faults. Intense volcanism in the archipelago is attributed to the ongoing subduction along the trench systems surrounding it. This study interprets the magnetic data covering the Philippine fault zone and the bounding archi- pelago subduction systems to understand the structural characteristics of the study area. Magnetic data analysis suggests that the Philippine fault is roughly distributed along the boundary of high/low magnetization and separates the different amplitude features of the first order analytic signal. Visayas province is a specific area bounded by the other parts of the Philippine ar- chipelago. Further differentiating the tectonic units, the proto-Southeast Bohol Trench should be the main tectonic boundary between Visayas and Mindanao. A clear NE - SW boundary separates Luzon from Visayas as shown by the variant depths to the top of the magnetic basement. This boundary could suggest the different tectonic characteristics of the two regions. Key words: Philippine fault, Philippine archipelago, Magnetic data, Tectonic Citation: Doo, W.
    [Show full text]
  • Java and Sumatra Segments of the Sunda Trench: Geomorphology and Geophysical Settings Analysed and Visualized by GMT Polina Lemenkova
    Java and Sumatra Segments of the Sunda Trench: Geomorphology and Geophysical Settings Analysed and Visualized by GMT Polina Lemenkova To cite this version: Polina Lemenkova. Java and Sumatra Segments of the Sunda Trench: Geomorphology and Geophys- ical Settings Analysed and Visualized by GMT. Glasnik Srpskog Geografskog Drustva, 2021, 100 (2), pp.1-23. 10.2298/GSGD2002001L. hal-03093633 HAL Id: hal-03093633 https://hal.archives-ouvertes.fr/hal-03093633 Submitted on 4 Jan 2021 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. Distributed under a Creative Commons Attribution| 4.0 International License ГЛАСНИК Српског географског друштва 100(2) 1 – 23 BULLETIN OF THE SERBIAN GEOGRAPHICAL SOCIETY 2020 ------------------------------------------------------------------------------ --------------------------------------- Original scientific paper UDC 551.4(267) https://doi.org/10.2298/GSGD2002001L Received: October 07, 2020 Corrected: November 27, 2020 Accepted: December 09, 2020 Polina Lemenkova1* * Schmidt Institute of Physics of the Earth, Russian Academy of Sciences, Department of Natural Disasters, Anthropogenic Hazards and Seismicity of the Earth, Laboratory of Regional Geophysics and Natural Disasters, Moscow, Russian Federation JAVA AND SUMATRA SEGMENTS OF THE SUNDA TRENCH: GEOMORPHOLOGY AND GEOPHYSICAL SETTINGS ANALYSED AND VISUALIZED BY GMT Abstract: The paper discusses the geomorphology of the Sunda Trench, an oceanic trench located in the eastern Indian Ocean along the Sumatra and Java Islands of the Indonesian archipelago.
    [Show full text]
  • India and Sunda Plates Motion and Deformation Along Their Boundary In
    India and Sunda plates motion and deformation along their boundary in Myanmar determined by GPS Anne Socquet, Christophe Vigny, Nicolas Chamot-Rooke, Wim Simons, Claude Rangin, Boudewijn Ambrosius To cite this version: Anne Socquet, Christophe Vigny, Nicolas Chamot-Rooke, Wim Simons, Claude Rangin, et al.. India and Sunda plates motion and deformation along their boundary in Myanmar determined by GPS. Jour- nal of Geophysical Research : Solid Earth, American Geophysical Union, 2006, 111 (B5), pp.B05406. 10.1029/2005JB003877. hal-01793657 HAL Id: hal-01793657 https://hal-ens.archives-ouvertes.fr/hal-01793657 Submitted on 16 May 2018 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. JOURNAL OF GEOPHYSICAL RESEARCH, VOL. 111, B05406, doi:10.1029/2005JB003877, 2006 India and Sunda plates motion and deformation along their boundary in Myanmar determined by GPS Anne Socquet,1,2 Christophe Vigny,1 Nicolas Chamot-Rooke,1 Wim Simons,3 Claude Rangin,4 and Boudewijn Ambrosius3 Received 8 June 2005; revised 12 January 2006; accepted 15 February 2006; published 6 May 2006. [1] Using a regional GPS data set including 190 stations in Asia, from Nepal to eastern Indonesia and spanning 11 years, we update the present-day relative motion between the Indian and Sundaland plates and discuss the deformation taking place between them in Myanmar.
    [Show full text]
  • The Tectonic Framework of the Sumatran Subduction Zone
    ANRV374-EA37-15 ARI 23 March 2009 12:21 The Tectonic Framework of the Sumatran Subduction Zone Robert McCaffrey Earth and Environmental Sciences, Rensselaer Polytechnic Institute, Troy, New York 12180; email: [email protected] Annu. Rev. Earth Planet. Sci. 2009. 37:345–66 Key Words by University of California - San Diego on 06/16/09. For personal use only. First published online as a Review in Advance on Sumatra, subduction, earthquake, hazards, geodesy December 4, 2008 The Annual Review of Earth and Planetary Sciences is Abstract Annu. Rev. Earth Planet. Sci. 2009.37:345-366. Downloaded from arjournals.annualreviews.org online at earth.annualreviews.org The great Aceh-Andaman earthquake of December 26, 2004 and its tragic This article’s doi: consequences brought the Sumatran region and its active tectonics into the 10.1146/annurev.earth.031208.100212 world’s focus. The plate tectonic setting of Sumatra has been as it is today Copyright c 2009 by Annual Reviews. for tens of millions of years, and catastrophic geologic events have likely All rights reserved been plentiful. The immaturity of our understanding of great earthquakes 0084-6597/09/0530-0345$20.00 and other types of geologic hazards contributed to the surprise regarding the location of the 2004 earthquake. The timing, however, is probably best understood simply in terms of the inevitability of the infrequent events that shape the course of geologic progress. Our best hope is to improve under- standing of the processes involved and decrease our vulnerability to them. 345 ANRV374-EA37-15 ARI 23 March 2009 12:21 INTRODUCTION The island of Sumatra (Figure 1) forms the western end of the Indonesian archipelago and until recently was perhaps best known to the world for its coffee, though perhaps not so much as Java, its neighbor to the east.
    [Show full text]
  • The Earth's Lithosphere-Documentary
    See discussions, stats, and author profiles for this publication at: https://www.researchgate.net/publication/310021377 The Earth's Lithosphere-Documentary Presentation · November 2011 CITATIONS READS 0 1,973 1 author: A. Balasubramanian University of Mysore 348 PUBLICATIONS 315 CITATIONS SEE PROFILE Some of the authors of this publication are also working on these related projects: Indian Social Sceince Congress-Trends in Earth Science Research View project Numerical Modelling for Prediction and Control of Saltwater Encroachment in the Coastal Aquifers of Tuticorin, Tamil Nadu View project All content following this page was uploaded by A. Balasubramanian on 13 November 2016. The user has requested enhancement of the downloaded file. THE EARTH’S LITHOSPHERE- Documentary By Prof. A. Balasubramanian University of Mysore 19-11-2011 Introduction Earth’s environmental segments include Atmosphere, Hydrosphere, lithosphere, and biosphere. Lithosphere is the basic solid sphere of the planet earth. It is the sphere of hard rock masses. The land we live in is on this lithosphere only. All other spheres are attached to this lithosphere due to earth’s gravity. Lithosphere is a massive and hard solid substratum holding the semisolid, liquid, biotic and gaseous molecules and masses surrounding it. All geomorphic processes happen on this sphere. It is the sphere where all natural resources are existing. It links the cyclic processes of atmosphere, hydrosphere, and biosphere. Lithosphere also acts as the basic route for all biogeochemical activities. For all geographic studies, a basic understanding of the lithosphere is needed. In this lesson, the following aspects are included: 1. The Earth’s Interior. 2.
    [Show full text]
  • A Decade of GPS in Southeast Asia: Resolving Sundaland Motion and Boundaries W
    JOURNAL OF GEOPHYSICAL RESEARCH, VOL. 112, B06420, doi:10.1029/2005JB003868, 2007 Click Here for Full Article A decade of GPS in Southeast Asia: Resolving Sundaland motion and boundaries W. J. F. Simons,1 A. Socquet,1,9 C. Vigny,2 B. A. C. Ambrosius,1 S. Haji Abu,3 Chaiwat Promthong,4 C. Subarya,5 D. A. Sarsito,6 S. Matheussen,1 P. Morgan,7 and W. Spakman8 Received 6 June 2005; revised 16 January 2007; accepted 2 March 2007; published 29 June 2007. [1] A unique GPS velocity field that spans the entire Southeast Asia region is presented. It is based on 10 years (1994–2004) of GPS data at more than 100 sites in Indonesia, Malaysia, Thailand, Myanmar, the Philippines, and Vietnam. The majority of the horizontal velocity vectors have a demonstrated global accuracy of 1 mm/yr (at 95% confidence level). The results have been used to (better) characterize the Sundaland block boundaries and to derive a new geokinematic model for the region. The rotation pole of the undeformed core of the Sundaland block is located at 49.0°N–94.2°E, with a clockwise rotation rate of 0.34°/Myr. With respect to both geodetically and geophysically defined Eurasia plate models, Sundaland moves eastward at a velocity of 6 ± 1 to 10 ± 1 mm/yr from south to north, respectively. Contrary to previous studies, Sundaland is shown to move independently with respect to South China, the eastern part of Java, the island of Sulawesi, and the northern tip of Borneo. The Red River fault in South China and Vietnam is still active and accommodates a strike-slip motion of 2 mm/yr.
    [Show full text]
  • Rigid and Non-Rigid Micro-Plates: Philippines and Myanmar-Andaman Case
    G Model CRAS2A-3298; No. of Pages 9 C. R. Geoscience xxx (2015) xxx–xxx Contents lists available at ScienceDirect Comptes Rendus Geoscience ww w.sciencedirect.com Tectonics, Tectonophysics Rigid and non-rigid micro-plates: Philippines and Myanmar-Andaman case studies Claude Rangin GEOAZUR, Universite´ de Nice–Sophia-Antipolis, avenue Albert-Einstein, 06664 Valbonne, France A R T I C L E I N F O A B S T R A C T Article history: Generally, tectonic plates are considered as rigid. Oblique plate convergence favors the Received 26 October 2015 development of micro-plates along the converging boundaries. The north–south-trending Accepted after revision 27 October 2015 Philippines archipelago (here named Philippine Mobile Belt, PMB), a few hundreds Available online xxx kilometers wide, is one of such complex tectonic zones. We show here that it is composed of rigid rotating crustal blocks (here called platelets). In Myanmar, the northernmost tip of Handled by Isabelle Manighetti the Sumatra-Andaman subduction system is another complex zone made of various Keywords: crustal blocks in-between convergent plates. Yet, contrary to PMB, it sustains internal Tectonics deformation with platelet buckling, altogether indicative of a non-rigid behavior. Geodynamics Therefore, the two case studies, Philippine Mobile Belt and Myanmar-Andaman micro- SE Asia plate (MAS), illustrate the complexity of micro-plate tectonics and kinematics at Micro-plates convergent plate boundaries. ß 2015 Acade´mie des sciences. Published by Elsevier Masson SAS. All rights reserved. 1. Introduction ‘‘Mobile Belt’’ (PMB, Rangin et al., 1990) in the East, a complex assemblage of platelets (or crustal blocks) jammed between Since the Cenozoic up to the present, Southeast Asia has the Philippine Sea Plate and the Sunda Plate, the Myanmar– been a puzzle of micro-plates partially amalgamated onto Andaman–Sumatra (MAS) micro-plate in the West, and the the Sunda plate margins (Rangin et al., 1990).
    [Show full text]
  • Interactions and Seismicity of Indian Tectonic Plate with Its Neighboring Plates: an Overview
    Interactions and Seismicity of Indian Tectonic Plate with its Neighboring Plates: An Overview by Venkata Dilip Kumar Pasupuleti, Pradeep Kumar Ramancharla in International Journal of Advanced Earth Science and Engineering Report No: IIIT/TR/2014/-1 Centre for Earthquake Engineering International Institute of Information Technology Hyderabad - 500 032, INDIA September 2014 Cloud Publications International Journal of Advanced Earth Science and Engineering 2014, Volume 3, Issue 1, pp. 151-170, Article ID Sci-202 ISSN: 2320 – 3609 _____________________________________________________________________________________________________ Review Article Open Access Interactions and Seismicity of Indian Tectonic Plate with its Neighboring Plates: An Overview Venkata Dilip Kumar Pasupuleti and Pradeep Kumar Ramancharla Earthquake Engineering Research Centre, IIIT, Hyderabad, India Correspondence should be addressed to Venkata Dilip Kumar Pasupuleti, [email protected] Publication Date: 8 September 2014 Article Link: http://scientific.cloud-journals.com/index.php/IJAESE/article/view/Sci-202 Copyright © 2014 Venkata Dilip Kumar Pasupuleti and Pradeep Kumar Ramancharla. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Abstract Understanding earthquakes and its prediction is most challenging tasks. Even though the earthquakes have been understood clearly, the prediction of earthquakes would take more time to come into reality. For this, collection of earthquake data and its interpretation plays a vital role. Its importance continues for few more decades in understanding the various aspects of earth structure and tectonic plate interactions. India, the second largest populous country of the world has experienced and is continuing to experience both inter and intra plate earthquakes, claiming life loss as well as damage to built environment.
    [Show full text]
  • M7.5 Molucca Sea Earthquake of 21 January 2007
    U.S. DEPARTMENT OF THE INTERIOR EARTHQUAKE SUMMARY MAP XXX U.S. GEOLOGICAL SURVEY M7.5 Molucca Sea Earthquake of 21 January 2007 Epicentral Area 119° 120° 121° 122° 123° 124° 125° 126° 127° 128° 129° 130° 131° Tectonic Setting Seismicity of Indonesia and Vicinity 95° 100° 105° 110° 115° 120° 125° 130° 135° 140° 1910 95° 100° 105° 110° 115° 120° 125° 130° 135° 140° Mindanao 1913 Kepulauan Mindanao T H A I L A N D 4° Talaud 4° T H A I L A N D S O U T H P H I L I P P I N E S 1936 S O U T H P H I L I P P I N E S C H I N A P H I L I P P I N E 1972 C H I N A P H I L I P P I N E S E A B R U N E I S E A C E L E B E S S E A S E A B R U N E I S E A 5° 5° 5° 5° BURMA Kepulauan BURMA PHILIPPINE P A C I F I C 3° 3° P A C I F I C PLATE M A L A Y S I A C E L E B E S A Sangir PLATE M A L A Y S I A C E L E B E S SEA O C E A N O C E A N Kuala Lumpur S E A Kuala Lumpur S E A PLATE Singapore CAROLINE PLATE Singapore SINGAPO RE Borneo SINGAPO RE Borneo 0° S 0° 2° 2° 0° S 0° u t u m Kalimantan MOLUCCA i m Kalimantan a SEA BIRD'S HEAD a a t M i n a h a s s a P e n i n s u l a 1986 t r SUNDA PLATE Sulawesi PLATE PLATE r r Sulawesi a A t a A (Celebes) Irian Jaya E 1991 I N D O N (CelebeEs) S I A Irian Jaya E N 1968 N MAOKE PLATE S I I 1° 1990 1° S New Guinea U S New Guinea U 5° I N D O N E S I A G 5° r 5° G 5° U 1905 1907 U B A N D A a B A N D A N Jakarta J A V A S E A DETAILED MAP W N Jakarta J A V A S E A DETAILED MAP W BANDA SEA PLATE S E A E s 1996 S E A E D N D N A s A Java A Java A a T U 0° 1932 0° T U I N D I A N R P k I N D I A N R P T I M O R L ' E S
    [Show full text]
  • A Grand Tour of the Ocean Basins by Declan G
    Transforms and fracture zones are introduced, also abandoned basins, convergent boundaries, and marginal basins. Instructors can easily change the sequence of stops to suit their courses using the Google Earth desktop app or by editing the KML file.Because large placemark balloons tend to obscure the Google Earth terrain behind them, you are advised to keep Google Earth and this PDF document open in separate windows, preferably on separate monitors or devices. Fig. 0 caption acknowledges all data and imagery sources. A Grand Tour of the Ocean Basins by Declan G. De Paor, [email protected] Welcome to the Grand Tour of the Ocean Basins! Use this document in association with the Google Earth tour which you can download from http://geode.net/GTOB/GTOB.kml Ocean floor ages are from http://nachon.free.fr/GE, based on Müller et al. (2008). See earthbyte.org/Resources/agegrid2008.html. Plate boundaries are from Laurel Goodell’s SERC web page: http://serc.carleton.edu/sp/library/google_earth/examples/ 49004.html based on Bird (2003) and programmed by Thomas Chust. Colors and line sizes were changed to improve visibility for persons with color vision deficiency, and I added other minor adjustments. The Tour Stops are arranged in a teaching sequence, Fig. 0. Plate Tectonics on Google Earth. ©2017 Google starting with continental rifting and incipient ocean basin Inc. Data SIO, NOAA, US Navy, NGA, USGS, GEBCO, formation in East Africa and the Red Sea and ending with NSF, LDEO, NOAA. Image Landsat/Copernicus, IBCAO, the oldest surviving fragments of oceanic crust. PGC, LDEO-Columbia.
    [Show full text]