Stratigraphic Framework of Jurassic Period and Early Cretaceous in Luozha, South Tibet: including the function of essential sequence law of the regional geological survey
- Received Date: 1900-01-01
- Rev Recd Date: 1900-01-01
- Publish Date: 2007-02-10
-
Key words:
- stratigraphic framework /
- sequence stratum /
- Jurassic Period and Early Cretaceous /
- Luozha /
- South Tibet
Abstract: According to the law of Milankovitch Cycles in the perpendicularity,the depositional sequences which lay on the verge of the NeoTethys Ocean,north Himalaya continent can be divided into three sequences with typeⅡand eighteen sequences with typeⅢ from Jurassic Period to Early Cretaceous.Lowstand System Tracts of Early and Metaphse Jurassic Period was undergrown,of which Transgressive Systems Tract and Highstand Systems Tract made up .And then Late Jurassic Period,it shaped huge incised valley,sea level had sunk deeply, Early Jurassic Period changed into Shelf Systems Tract.Therefore, it is established that the stratigraphic framework of Jurassic Period and Early Cretaceous.Based on the 1∶〖KG-*2〗250,000 and the 1∶〖KG-*2〗50,000 regional geological survey mapping,the essential sequences of Lithostratigraphic unit will change the static description into the dynamic law survey of basal sequences,which elucidates the relationship of essential sequence law and sequence stratum.
| Citation: | XIA Jun. Stratigraphic Framework of Jurassic Period and Early Cretaceous in Luozha, South Tibet: including the function of essential sequence law of the regional geological survey[J]. Acta Sedimentologica Sinica, 2007, 25(1): 10-20.
|
DownLoad: