The widespread Permian carbonate strata outcropped in northwestern Thailand are considered as the evidence for the Late Paleozoic shallow Tethys. Our investigation, however, shows that basalt can be discovered usually...The widespread Permian carbonate strata outcropped in northwestern Thailand are considered as the evidence for the Late Paleozoic shallow Tethys. Our investigation, however, shows that basalt can be discovered usually under the Permian carbonate sequence in Chiang Mai-Fang area, northwestern Thailand. The basalt belongs to subalkalic basalt and potassic trachybasalt. They are characterized by high P and Ti in major elements, by high content, enriching LREE, lacking δEu anomaly in rare earth elements, and by enrichment of the large ion lithophile element (LILE) (K, Rb, Ba) and high field strength element (HFSE) (Nb, Ta, Zr) in trace elements, which can be compared with the characters of the oceanic island basalt in Three Rivers (Jinsha River, Lancang River, and Nujiang River) area, southwestern China. Therefore, the Permian carbonate in the studied area was deposited on a sea-mount, rather than on a stable carbonate platform. The oceanic basin is correlated to the Late Paleozoic ocean represented by the Changning-Menglian Belt in southwestern China and they are a major basin of the Paleo-Tethyan Archipelagoes Ocean. The result indicates nonexistence of a Shan-Thai Block in the Late Paleozoic.展开更多
Chinese merchants in Thailand were among the first to set up Nan Bei Hang (North South Goods Exchange Centres) during the formation stage of Hong Kong as a seaport for entrepot trade. Chinese merchants in Thailand wit...Chinese merchants in Thailand were among the first to set up Nan Bei Hang (North South Goods Exchange Centres) during the formation stage of Hong Kong as a seaport for entrepot trade. Chinese merchants in Thailand with Chaozhoulese as the main body, during the developmental stage of Hong Kong as an entrepot trade port, were active pioneers for operation of entrepot trade at Hong Kong, and right after WWII they went on to initiate the first round of the multilateral trade organized by Hong Kong Singapore Siam Shantou Trading System, thus unveiling the prelude for Hong Kong as an entrepot trade port to transit from its stagnation stage to its rehabilitation stage.展开更多
基金the National Natural Science Foundation of China (Grant Nos.40372105,40772143)"111" Project (Grant No. B08030)Suranaree University of Technology, Thailand
文摘The widespread Permian carbonate strata outcropped in northwestern Thailand are considered as the evidence for the Late Paleozoic shallow Tethys. Our investigation, however, shows that basalt can be discovered usually under the Permian carbonate sequence in Chiang Mai-Fang area, northwestern Thailand. The basalt belongs to subalkalic basalt and potassic trachybasalt. They are characterized by high P and Ti in major elements, by high content, enriching LREE, lacking δEu anomaly in rare earth elements, and by enrichment of the large ion lithophile element (LILE) (K, Rb, Ba) and high field strength element (HFSE) (Nb, Ta, Zr) in trace elements, which can be compared with the characters of the oceanic island basalt in Three Rivers (Jinsha River, Lancang River, and Nujiang River) area, southwestern China. Therefore, the Permian carbonate in the studied area was deposited on a sea-mount, rather than on a stable carbonate platform. The oceanic basin is correlated to the Late Paleozoic ocean represented by the Changning-Menglian Belt in southwestern China and they are a major basin of the Paleo-Tethyan Archipelagoes Ocean. The result indicates nonexistence of a Shan-Thai Block in the Late Paleozoic.
文摘Chinese merchants in Thailand were among the first to set up Nan Bei Hang (North South Goods Exchange Centres) during the formation stage of Hong Kong as a seaport for entrepot trade. Chinese merchants in Thailand with Chaozhoulese as the main body, during the developmental stage of Hong Kong as an entrepot trade port, were active pioneers for operation of entrepot trade at Hong Kong, and right after WWII they went on to initiate the first round of the multilateral trade organized by Hong Kong Singapore Siam Shantou Trading System, thus unveiling the prelude for Hong Kong as an entrepot trade port to transit from its stagnation stage to its rehabilitation stage.
