... in the Mesozoic Indosinian-Thai-Malayan orogeny. It is deduced that the revolutionary phase of the orogeny extended from early Triassic to early Cretaceous; folding of the geosynclinal sediments and accompanying recrystallization of the limestones terminated in late Jurassic, but granitic activity extended...

... and surrounding land areas mainly lie between the Sumatra and Myanmar areas, west of a north trending zone of pre-Tertiary basement comprising the Malayan orogeny. The orogen represents effective basement in the basin. The bathymetry in the area varies between 200–2000 m ( Figure 1 ). Figure 1...

... by a series of parallel mountain chains with an approximate north-south trend. In many places these ridges are the eroded granite-filled cores of huge anticlinal folds which were uplifted during the Malayan orogeny in Mesozoic time. The biggest of these ranges is known as the Main Range ( Fig. 2...

... 1970 American Association of Petroleum Geologists I welcome Burton’s discussion of my article on the lower Paleozoic rocks of the Malay Peninsula ( Jones, 1968a ), but am disturbed to find that, in many places, the discussion is used as a vehicle to present his own interpretations of Malayan lower...

... years ago. For this disturbance the writer proposes the name Pasadenan orogeny . A study of this orogeny and of events following it suggests that, though its climax is long past, this disturbance has not yet completely died out. If this conclusion is warranted, the present does not truly reflect either...

... are shown together. Lesser and Greater Himalayas are LH and GH . Allochthonous rocks of these constitute pre-alpine (Paleozoic-Mesozoic) “Daling geosyncline” and also underwent alpine deformation and metamorphism. Sawteeth and bars point toward rocks of indicated isopic zone. The Thai-Malayan...

..., a eugeanticlinal ridge ( Aubouin, 1965 ) here seems to explain it more readily than a southward extension of Cathaysia/Indosinia for 1,000 km across the Gulf of Thailand. It is strange that Jones (p. 1272) seeks a common origin for all the chert of the Malayan Paleozoic. That the chert in the (presumed...

... Mesozoic accretion of Sundaland until the onset of Cenozoic deformation associated with the Himalayan orogeny is fragmentary. Hence, the potential link between Indochinese basin evolution and Late Mesozoic–earliest Cenozoic plate convergence along the eastern margin of Sundaland, similar to that described...

...; accepted, October 14, 1974. 2 Department of Geology, University of Malaya. © 1975 American Association of Petroleum Geologists. All rights reserved 1975 American Association of Petroleum Geologists The northern and western parts of Malaya are parts of the Yunnan-Malayan geosyncline...

... systems and collision belts. References Asnachinda P. Nulataya P. Tin mineralization in the Burmese-Malayan Peninsula—a plate tectonic model Proc. 3rd Reg. Conf. Geol. Miner. Res. SE Asia 1978 Bangkok 293 9 Audley-Charles M. G. Carter D. J. Milsom J. S. Tectonic...

... of the Indonesian tin belt with special reference to Bangka Tectonophys 1973 4 (4–6), 403 18 Katili J. A. Spencer A. M. Sumatra Mesozoic-Cenozoic Orogenic Belts: Data for Orogenie Studies. Spec. Publ. geol. Soc. Lond. No 1974 4 317 31 Khoo, T. T. 1968. A petrological study...

... are both gradual, a reason is provided for the periodicity of eras of orogeny. At the same time adequate amounts of kinetic energy, always a problem in dealing with the phenomena of diastrophism, are made available. Such effects are in no way exclusive of the results of radioactivity, sedimentation...

..., Malaya Journal of Geoscience, Osaka City University 1966 9 123 130 Idris M. B. Azman S. Rosedean Z. Geology of the Ulu Endau Area, Johore-Pahang, Malaysia Malayan Nature Journal 1987 41 93 105 Ishii K. On some fusulinids and other foraminifera from the Permian...

... of the extrusion and the amalgamation of heterogeneous continental crustal blocks, volcanic arcs, and suture zones during the Triassic Indosinian orogeny ( Tapponnier et al. , 1982 , 1986 ; Lacassin et al. , 1993 , 1997 ; Hall and Morley, 2004 ; Metcalfe, 2013 ). The Sundaland block is often assumed...

... deep shocks (to 300 kilometers), and a belt of deep-focus earthquakes. Hess considers the northern part of the inner or western branch (Luzon, Taiwan, Riukiu) as older than the outer branches. The age of its first downfolding may be late Jurassic or early Cretaceous (Nevadian-Malayan orogeny...

... [ 2 ]. The Late Carboniferous to Triassic subduction of the Paleo-Tethys, resulting in the Late Triassic collision of Sibumasu with the Indochina-Cathaysia composite terrane, is known as the Indosinian Orogeny [ 2 , 3 , 20 ]. Between these two continental blocks, the Sukhothai Zone (synonyms being...

... is found between Permian and Triassic. In addition, no regional unconformity in the Eastern province could be linked to supposed Indosinian orogeny near the Permo-Triassic boundary ( Lee, 2009 ). Hence, in this paper, we infer that the Sibumasu–Indochina (East Malaya) collision and closure of the Bentong...

.... These outcrops form the upper part of a huge batholith intruded in Upper Jurassic times during a later phase of the Thai-Malayan orogenic cycle (Hutchinson, I964). The associated orogeny uplifted the area to form the Main Range which includes the Cameron Highlands. Sub- ordinate to the granite are isolated...

... al. , 1968 ; Le Pichon, 1968 ; and Morgan, 1968 ) indicate that classical theories of orogeny such as the geosynclinal cycle that were developed for the Sunda land may be largely in error. The Sunda Shelf was studied as part of a program of reconnaissance mapping of the structure...

...., 2013 ). It also has been proposed that the Eastern belt, referred to as the East Malayan block, was later separated from the IndoChina block by late Mesozoic and Cenozoic rifting in the Gulf of Thailand ( Sone and Metcalfe, 2008 ; Metcalfe, 2013b ). Fig. 2. Simplified geologic map of Peninsular...