caa a22 4500 60615003X CHVBK 20210128100537.0 cr unu---uuuuu 210128e20150701xx s 000 0 eng 10.1007/s00531-015-1145-7 doi (NATIONALLICENCE)springer-10.1007/s00531-015-1145-7 Late Cenozoic transtensional fault belt discovered on the boundary of the Awati Sag in the northwestern Tarim Basin [Elektronische Daten] [Yue-Jun Li, Qiang Zhang, Guang-Ya Zhang, Hai-Jun Yang, Xian-Zhang Yang, Jun Shi, Yuan Neng, Yan-Gui Chen, Lei Wen] Late Cenozoic transtensional fault belt was discovered on Shajingzi fault belt, NW boundary of the Awati Sag in the northwestern Tarim Basin. And numerous Quaternary normal faults were discovered on Aqia and Tumuxiuke fault belts, SW boundary of Awati. This discovery reveals Quaternary normal fault activity in the Tarim Basin for the first time. It is also a new discovery in the southern flank of Tianshan Mountains. Shajingzi transtensional fault belt is made up of numerous, small normal faults. Horizontally, the normal faults are arranged in right-step, en echelon patterns along the preexisting Shajingzi basement fault, forming a sinistral transtensional normal fault belt. In profile, they cut through the Paleozoic to the mid-Quaternary and combine to form negative flower structures. The Late Cenozoic normal faults on the SW boundary of Awati Sag were distributed mainly in the uplift side of the preexisting Aqia and Tumuxiuke basement-involved faults, and combined to form small horst and graben structures in profile. Based on the intensive seismic interpretation, careful fault mapping, and growth index analysis, we conclude that the normal fault activity of Shajingzi transtensional fault belt began from Late Pliocene and ceased in Late Pleistocene (mid-Quaternary). And the normal faulting on the SW boundary of Awati Sag began from the very beginning of Quaternary and ceased in Pleistocene. The normal faulting on Awati's SW boundary began a little later than those on the NW boundary. The origin of Shajingzi transtensional normal fault belt was due to the left-lateral strike-slip occurred in the southern flank of Tianshan, and then, due to the eastward escape of the Awati block, a tensional stress developed the normal faults on its SW boundary. Springer-Verlag Berlin Heidelberg, 2015 Pliocene-Pleistocene normal fault nationallicence Late Cenozoic transtensional normal fault belt nationallicence Left-lateral strike-slip nationallicence Awati Sag nationallicence Northwestern Tarim Basin nationallicence Southern flank of Tianshan Mountains nationallicence Seismic interpretation nationallicence Li Yue-Jun Institute of Geology and Geophysics, Chinese Academy of Sciences, 100029, Beijing, China aut Zhang Qiang Institute of Geology and Geophysics, Chinese Academy of Sciences, 100029, Beijing, China aut Zhang Guang-Ya Research Institute of Petroleum Exploration and Development, PetroChina, 100083, Beijing, China aut Yang Hai-Jun Tarim Oilfield Company, PetroChina, 841000, Korla, China aut Yang Xian-Zhang Tarim Oilfield Company, PetroChina, 841000, Korla, China aut Shi Jun Tarim Oilfield Company, PetroChina, 841000, Korla, China aut Neng Yuan Tarim Oilfield Company, PetroChina, 841000, Korla, China aut Chen Yan-Gui Tarim Oilfield Company, PetroChina, 841000, Korla, China aut Wen Lei Institute of Geology and Geophysics, Chinese Academy of Sciences, 100029, Beijing, China aut International Journal of Earth Sciences Springer Berlin Heidelberg 104/5(2015-07-01), 1253-1265 1437-3254 104:5<1253 2015 104 531 https://doi.org/10.1007/s00531-015-1145-7 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s00531-015-1145-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Li Yue-Jun Institute of Geology and Geophysics, Chinese Academy of Sciences, 100029, Beijing, China aut NATIONALLICENCE 700 1- Zhang Qiang Institute of Geology and Geophysics, Chinese Academy of Sciences, 100029, Beijing, China aut NATIONALLICENCE 700 1- Zhang Guang-Ya Research Institute of Petroleum Exploration and Development, PetroChina, 100083, Beijing, China aut NATIONALLICENCE 700 1- Yang Hai-Jun Tarim Oilfield Company, PetroChina, 841000, Korla, China aut NATIONALLICENCE 700 1- Yang Xian-Zhang Tarim Oilfield Company, PetroChina, 841000, Korla, China aut NATIONALLICENCE 700 1- Shi Jun Tarim Oilfield Company, PetroChina, 841000, Korla, China aut NATIONALLICENCE 700 1- Neng Yuan Tarim Oilfield Company, PetroChina, 841000, Korla, China aut NATIONALLICENCE 700 1- Chen Yan-Gui Tarim Oilfield Company, PetroChina, 841000, Korla, China aut NATIONALLICENCE 700 1- Wen Lei Institute of Geology and Geophysics, Chinese Academy of Sciences, 100029, Beijing, China aut NATIONALLICENCE 773 0- International Journal of Earth Sciences Springer Berlin Heidelberg 104/5(2015-07-01), 1253-1265 1437-3254 104:5<1253 2015 104 531