Stop0 visit DMR’s rock samples collection Stop6 Paleo-tethys of Permian Ophiolite suite; see also in Excerpt paper of Stop1 Permian-Triassic Supaiwan Aggregate Chutakositkanon and Hisada (2008), Limestone Mine, Sukothai Foldbelt; see also Putthapiban (2002) and Watita and Metcalfe in Excerpt paper of Sone et al. (2012) (2005) Stop2 Triassic Pong Nam Ron Formation; Stop7 Permian limestone of Indochina fore argillite facies, trench area; see also in arc; see also in Excerpt paper of Excerpt paper of Sone et al. (2012) Charoentitirat (2002) Stop3 Jurassic-Cretaceous Laem Sink Stop8 Paleo-tethys of Permian ophiolite suite; Formation, the fault between Sukothai see also in Excerpt paper of Saesaengseerung foldbelt-trench area; see also in Excerpt paper et al., (2009) of Sone et al. (2012) Stop9 Typical Mélange Permian clastic Stop4 Triassic-Jurassic I-type Granite, in sedimentary rock suture area after plate collision; see also in Excerpt paper of Putthapiban (2002) Stop10 Inferred Pre-Cambrian Gneiss of Sibumasu Cratonic Area; see also in Excerpt Stop5 Permian Oceanic crust with Triassic paper of Kanjanapayont et al., (2013) chert, trench area; see also in Excerpt paper of Sone et al. (2012). STOP0 THE DMR’S REFERENCE ROCKS SAMPLES COLLECTION Location: Klaeng, Mueang Rayong District, Rayong Province Geographic Reference: 12.643323N 101.505470 E General Information: Department of Mineral Resources (DMR) by Division of Geological Survey has launched Geological Collection Project since 2010. The collections have been derived from exploration geologists of DMR in several geological works entire the country. Formerly, the selected samples are scattered recording and difficult to gather into the same format due to the difference purposes of collecting sample. After this project began, the Division of Geological Survey had made a typical format for gathering the necessary information. However, not only the rock samples are kept but rare and beautiful mineral or fossils are needed as well. In addition, the rare samples from foreign country had been derived by exchanging samples from foreign country. Nowadays, the collections are currently storage at Mineral and Rock Research Center, Rayong province. All collections will be moved to Geo-Collection building and ready to display for ordinary people and scientific researcher soon. The main objective is to provide efficient storage and database services in order to support scientific researches and developments. The project aims to collect and store geological samples systematically. Samples are basically informative references and support descriptions for further studies. All samples are classified and recorded systematically. The detailed of each sample contains basic information such as coordinate, rock descriptions, photography, texture and so on. The derived collections are divided into two main categories: geological materials and supplementary geosciences data. Geological materials are defined as rock samples derived from domestic and foreign countries. Supplementary geosciences data are composed of geologic maps, reports and photographs on geological view. Until now the collections had been collected rapidly up to 6,469 samples. The Division of Geological Survey planned to fully public the collection via website, http://bgs.go.th. In web page, researchers can access the basically detailed samples by only typing keyword such as rock name. On the other hand, researchers can click on symbol in webpage for finding rock type with selected location. Detailed sampling includes sampling locations, rock type, geochemical analyses e.g. XRD, XRF, thin sections and samples and so on. Additionally, all are welcome to site visit or even borrow samples for researches. However, the both latter services are now unavailable due to Geo-collection building and services system are remaining not complete. Highlight Visit DMR’s rocks sample collection. (a) RMRC building billboard and (b) a Geo-collection building. (Right) Displays samples storage at RMRC and photographs of sample code: area base (A), fossil sample (F), stratigraphic sample (S), foreign sample (FS) and extra large size (X) Displays (a) http\\bgs.or.th homepage that showing rock sampling location in Thailand and (b) page of rock sample detail that showing coordinate and location, rock sample picture, basic rock description, and so on. STOP 1 PERMIAN-TRIASSIC SUPAIWAN AGGREGATE LIMESTONE MINE, SUKHOTHAI FOLDBELT: Location: Khao Sukpaiwan, Kong Din Urban, Klaeng district, Rayong province Geographic Reference: N 12.780093 E 101.796859 General Information: The Sukpaiwan formation has restricted distribution in area northeast of Klaeng district, Rayong province, especially at Khao Sukpaiwan, Khao Wong, Khao Chong Lom and Khao Cha-ang On. These small hills locate at eastern side of Khao Chamao. This formation is more than 100 m thick (Fontaine and Salyapongse, 1997a), comprising gray to dark gray, purplish brown limestone. The beds are fine to medium bedded (3-30 cm thick). Oncoids with diameters less than 0.5 cm, peloids and bioclasts are present in the limestone. The lithology varies from grainstone to lime-mudstone. Shale is interbedded with limestone in the lower part of the formation. Clasts of volcanic rocks are found. This formation has not experienced strong deformation. It unconformably overlies Late Permian rocks. Fossils of foraminifera Meandrospira pusilla Ho, Glomospira tenuifistula Ho, and algae Aeolissacus tintinniforis Misik indicate an Early-Middle Triassic (Scythian-Ladinian) age. Highlight : The oncolite is generally formed by the accretion of blue-green algae, in a very shallow marine, wave agitated environment. The oncolitic limestone at Khao Suk Phrai Wan is the upper part of the Mt-unit. The age of this unit is considered to be Permian to Lower Triassic, Characteristically, the Mt-unit consists of metavolcanics, metapyroclastics and metapyroclastic and metalimestones (See Stop 8) which grade to tuffaceous sequence in the upper part where the association of oolitic and oncolitic limestone are more abundance. All these rocks can not be mapped as a separated unit and therefore, they have been mapped as the Mt-unit. Foraminifers have been detected in this oncolitic limestone at Khao Suk Phrai Wan. The oncolitic limestone can be traced almost around Khao Chamao) and its northward extension was noted as far as Khao Cha-ang On where Ladinian fossils have been dated. Also not very far underneath the oncolitic limestone, the Late Permian Brachiopod (Leptodus) have been discovered in the tuffaceous sediments near Khao lpring . Gradtional contact has been noted among these rocks. Contact relation between the Mt-unit, especially the oncolitic limestone, and the overlying T-unit is not clear, but thought to be gradational. Since we will not visit the T unit which possibly represents a transitional unit between the shallow and the deep marine facies in the Triassic time (the oncolitic limestone and the Ch-p-t or Ch-t unit respectively), some descriptions of the T-unit will be given here below. SEE ALSO IN EXCERPT PAPER OF SONE ET AL. (2012) Simple geological map of the Khao Yai Phring area east of Klaeng city, southeastern Thailand, showing the Late Permian and Early Triassic fossil localities. Foraminifer data (Fontaine and Vachard, 1981; Fontaine and Salyapongse, 1998, 1999; Fontaine et al., 1999). Suggested stratigraphy of a Permian–Triassic siliciclastic to carbonate succession of the Sukpaiwan Formation in the Khao Yai Phring area east of Klaeng, southeastern Thailand. Exact stratigraphic level of Khao Wong limestone not certain (see text). Foraminifer data (Fontaine and Vachard, 1981; Fontaine and Salyapongse, 1998, 1999; Fontaine et al., 1999). STOP 2 TRIASSIC PONG NAM RON FORMATION; ARGILLITE FACIES, TRENCH Location: Current Quarry, Khao Wua Urban, Tha Mai district, Chanthaburi Province Geographic Reference: N 12.642246 E 102.061563 General Information: In Chanthaburi area, three formations of Triassic rocks were record as follows. The Noen Po formation distributed from northern Chantaburi province southeastward to Laem Ngop district, Trat province. It is well exposed at Ban Noen Po, Khao Cham-Han and Ban Nong Chim. This formation consists of dark gray to black mudstone and shale with some coal. Locally, layers of gray chert occur in 3-5 cm thick beds. Fossils of radiolaria Triassocampe, Syringocapsa, Archaeospongoprunum indicate Middle to Late Triassic age (Hada et al., 1997). Color of the rock changes to be light color when weathered. Large amount of feldspar and interbedded volcanic horizons occur within the formation. The Pong Nam Ron Formation was named after the Pong Nam Ron district by Sivaborvorn et al. (1976), has been widely used but in a different sense (Tansathien et al., 1975; Chaodumrong, 1992a; and Tansuwan, 1997). Outcrops of this formation are clearly visualised in area east of Chanta Buri province, especially on eastern side of the Chanthaburi-Sa Kaeo road and in the Pong Nam Ron and Wang Nam Yen districts along border with Cambodia. Thickness of this formation is more than 200 m, consisting of thick to massive dark gray feldspathic sandstones which became greenish gray when weathered.This sandstone is poorly sorted with clasts and grains of volcanic rock fragments, feldspar, with minor quartz, sedimentary and metamorphic rock fragments. Graded bedding was also found. Interbeds of mudstone and conglomerate were found in sandstone locally. Clasts in the conglomerates are well rounded and consist of volcanic