Abstract
Modern sands of the Junggar and Turpan basins are markedly litharenitic because of derivation from upper Paleozoic are sequences that form the bedrock of the northern Tian Shan and Bogda Shan. In contrast, sands of the Tarim basin are compositionally much more varied, ranging from quartzofeldspathic to litharenitic. Tarim sands reflect derivation from plutonic and thrusted sedimentary and metamorphic terranes exposed in surrounding mountain ranges. Extrabasinal carbonate sedimentary-lithic fragments, intentionally omitted from provenance analyses by some workers, are important provenance indicators in Tarim samples. -from Authors
Original language | English |
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Pages (from-to) | 323-344 |
Number of pages | 22 |
Journal | Geological Society of America Bulletin |
Volume | 105 |
Issue number | 3 |
DOIs | |
State | Published - 1993 |