| 加里曼丹岛和马来半岛中生代岩相古地理特征及其构造意义 |
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| 引用本文： | 颜佳新.加里曼丹岛和马来半岛中生代岩相古地理特征及其构造意义[J].热带海洋学报,2005,24(2):26-32. |
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| 作者姓名： | 颜佳新 |
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| 作者单位： | 中国地质大学,湖北,武汉,430074 |
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| 基金项目： | 国家重点基础研究发展规划项目(G20000467 02),国家科技专项(2001DIA5004),中国科学院知识创新工程项目(KZCX2 117 3) |
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| 摘 要： | 印支运动以后,在现今的南海及其周围存在过2个古海洋,其中晚侏罗世一早白垩世消失于南海北部陆缘区、北巴拉望-礼乐滩-南沙地块以北的古海洋为“中特提斯”,而早第三纪期间消失于南沙地块以南沙捞越一带的古海洋为“古南海”。它们的结束时间和消失的古地理位置完全不同。对它们的正确识别和区分,对目前进行的南海周边地区中一新生代构造演化研究极为重要。对马来半岛、加里曼丹岛中生代岩相古地理资料的整理和分析结果支持如下结论：中特提斯洋的延伸是从苏门答腊的Woyla缝合线,过婆罗洲的Meratus缝合线。然后绕西南婆罗洲地块至加里曼丹岛的西北(Lupar带或者Boyan带),进入南海西南角(南沙-礼乐滩-北巴拉望地块等以北),再接南海北部陆缘区内的中特提斯缝合线。该区中生代海相地层的分布明显受构造演化的控制,整体趋势是向南退缩。印支运动以前、早-中三叠世的海侵广泛分布于古特提斯带及以南地区,涉及华南,中南地块,马来半岛及以南地区;印支运动基本结束了古特提斯带的海侵,因此晚三叠世一早侏罗世的海侵主要限于中特提斯海域及以南地区,如与中特提斯洋相邻的陆域,包括华南的湘赣粤海湾晚三叠世一早侏罗世的海侵、中南半岛东南部早侏罗世的海侵以及新加坡早侏罗世的海相地层。白垩纪海相地层主要分布于中特提斯以南地区,如加里曼丹岛。
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| 关 键 词： | 岩相古地理 中特提斯 中生代 加里曼丹岛 马来半岛 |
| 文章编号： | 1009-5470(2005)02-0026-07 |
| 修稿时间： | 2004年4月28日 |
TECTONIC IMPLICATIONS OF MARINE MESOZOIC DEPOSITS FROM KALIMANTAN AND MALAY PENINSULA |
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| YAN Jia-xin.TECTONIC IMPLICATIONS OF MARINE MESOZOIC DEPOSITS FROM KALIMANTAN AND MALAY PENINSULA[J].Journal of Tropical Oceanography,2005,24(2):26-32. |
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| Authors: | YAN Jia-xin |
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| Abstract: | In this paper, the "Proto-South China Sea" is revised as an oceanic basin to the south of the Nansha block which was closed during Early Tertiary, and the Meso-Tethys is referred to the ocean situated to the north of the Palawan-Nansha blocks which was terminated during late Jurassic to early Cretaceous. The two oceanic basins differ in terminating time and paleogeographic position. Compilations of Mesozoic lithofacies and paleographic data from Kalimantan and Malay Peninsula indicate that the Meso-Tethys extended from the Woyla Suture of Sumatra to Lupar or Boyan belt of Kalimantan through the Meratus Suture of Borneo. It possibly extended to the east between the Nansha and Xisha blocks, and then stretched along the northern continental margin of the South China Sea. The distributional pattern of the Mesozoic marine deposits, retreating southward in general, was controlled by the tectonic evolution of this region. The marine deposits of Early and Middle Triassic are widespread over Paleo-Tethyan realm, including South China, Indo-China, Malay Peninsula and regions to their south. The Indo-China Orogeny terminated the transgressions over the Paleo-Tethyan realm, thus the marine deposits of Late Triassic to Middle Jurassic were confined to the continents adjacent to the Meso-Tethyan realm, including the Hunan-Jiangxi-Guangdong Embayment of Late Triassic to Early Jurassic, Early Jurassic transgression on the southern part of Indo-China and on Singapore. Cretaceous marine deposits retreated southward to Kalimantan. |
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| Keywords: | lithofacies and paleogeography Meso-Tethys Mesozoic Kalimantan Malay Peninsula |
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