Discovery of Lower Permian Radiolarian and Conodont Faunas from the Bedded Chert of the Chanthaburi Area Along the Sra Kaeo Suture Zone, Eastern Thailand

Saesaengseerung, Doungrutai; Agematsu, Sachiko; Sashida, Katsuo; Sardsud, Apsorn

doi:10.2517/1342-8144-13.2.119

Cited by 28 publications

(14 citation statements)

References 40 publications

(47 reference statements)

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“…Ophiolitic rocks in the suture are represented by the Thung Kabin melange with clasts of bedded chert, limestone, serpentinite, gabbro, and basaltic pillow lavas. Bedded radiolarian cherts associated with pillow basalts in the Thung Kabin melange have been dated as Early Permian and late Middle to early Late Permian by radiolarians and conodonts (Hada et al, 1999;Saesaengseerung et al, 2009). In addition, cherts from the ''Chert-Clastic Sequence'' (Hada et al, 1999) have been dated as Middle Triassic (Sashida et al, 1997).…”

Section: Sra Kaeo Suturementioning

confidence: 99%

Tectonic evolution of Sundaland

Metcalfe¹

2017

BGSM

191

139

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Section: Sra Kaeo Suturementioning

confidence: 99%

Tectonic evolution of Sundaland

Metcalfe¹

2017

BGSM

191

139

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“…The cherts contain Early, Middle and Late Permian radiolarians and, rarely, conodonts and the limestone blocks contain Early, Middle and Late Permian fusulinids (Fig. 1c, point 4) (Hada et al 1997; Saesaengseerung et al 2009; Ueno & Charoentitirat, 2011). Zircons from a granite clast are U–Pb dated as 486.5 ± 5 Ma, which is close to the age of the Cambrian–Ordovician boundary.…”

Section: Geological Settingmentioning

confidence: 99%

“…2005) and central, eastern and northeastern Thailand (Sashida & Nikornsri, 1997; Sashida et al . 1998; Sashida & Salyapongse, 2002; Saesaengseerung et al 2009; Burrett et al . 2015).…”

Section: Radiolarian Faunas From Pailin Cambodiamentioning

confidence: 99%

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Early Permian radiolarians from the extension of the Sa Kaeo Suture in Cambodia – tectonic implications

2017

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A reconnaissance survey of part of western Cambodia has found quarries in and near the town of Pailin containing chert, basalt, volcaniclastic rocks, gabbro and serpentinite. Abandoned quarries contain chert and basalt clasts in a volcaniclastic matrix and may constitute a mélange. A new, recently active, quarry contains these rock units in close and coherent contact but they lack the serpentinitic matrix of the Thung Kabin Mélange of eastern Thailand. The rock units are in close contact and may best be described collectively as a dismembered ophiolite. The mélange-ophiolite association constitutes a 3 km wide, 20 km long E-W belt separating a northern 200 km 2 block of the mainly amphibolitic Pailin Crystalline Complex from a southern area of Triassic submarine fan siliciclastic rocks. The cherts yield the first documented radiolarian fauna from Cambodia and include a moderately well-preserved Asselian-Sakmarian age fauna consisting of Pseudoalbaillella sakmarensis, Pseudoalbaillella scalprata morphotype scalprata, Pseudoalbaillella sp. cf. P. simplex, Pseudoalbaillella u-forma morphotype II, Pseudoalbaillella sp. cf. P. elegans, Pseudoalbaillella sp. cf. P. lomentaria, Albaillella sp., Pseudoalbaillella spp., Trilonche? sp., Latentifistularia gen. et sp. indet. and Entactinaria gen. et sp. indet. The Pailin ophiolitic rocks, mélange and volcanic rocks occur within a generally E-W-trending belt, which suggests that the Sa Kaeo Suture does not extend southeastwards paralleling the Thai-Cambodian border, nor extend under the Cardamom Mountains but, rather, extends eastwards into Cambodia and possibly then turns southwards along the strike of the Pursat-Kampot Fold Belt.

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“…From the above evidences, the range of Stigmosphaerostylus itsukaichiensis is at least from a middle part of the Neoalbaillella ornithoformis to a lower part of the Neoalbaillella optima Assemblage Zones of Kuwahara et al (1998). At the Sra Kaeo area in eastern Thailand, Srakaeosphaera minuta was first discovered together with Middle to Late Permian species (Sashida et al, 1993) and later found in the Lower Permian chert succession (Saesaengseerung et al, 2009). Thus, Srakaeosphaera minuta has a relatively long range during Permian period.…”

Section: Age Determinationmentioning

confidence: 99%

Middle and Late Permian radiolarians from the Nanjo Mountains, Fukui Prefecture, Southwest Japan

Nakae

2011

Bull. Geol. Surv. Japan

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The Nanjo Mountains located in Fukui Prefecture, Southwest Japan are chiefly underlain by sedimentary complexes of various rock-types such as basalt, limestone, chert, mudstone and sandstone. A lot of reports on the occurrence of Mesozoic radiolarians mainly from mudstones in the mountains have been appeared in the last three decades, however litho-chronological information on Paleozoic rocks of the complexes is still not obtained enough because Paleozoic radiolarians have rarely been found. Through the present work, moderately-to poorly-preserved radiolarians recovered from tuffaceous and siliceous mudstones and cherts in the Nanjo Mountains are described and illustrated herein; they include genera Albaillella,

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Discovery of Lower Permian Radiolarian and Conodont Faunas from the Bedded Chert of the Chanthaburi Area Along the Sra Kaeo Suture Zone, Eastern Thailand

Cited by 28 publications

References 40 publications

Tectonic evolution of Sundaland

Tectonic evolution of Sundaland

Early Permian radiolarians from the extension of the Sa Kaeo Suture in Cambodia – tectonic implications

Middle and Late Permian radiolarians from the Nanjo Mountains, Fukui Prefecture, Southwest Japan

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