caa a22 4500 445301201 CHVBK 20180317142558.0 cr unu---uuuuu 170323e20101101xx s 000 0 eng 10.1007/s11430-010-4042-8 doi (NATIONALLICENCE)springer-10.1007/s11430-010-4042-8 Basement faults and volcanic rock distributions in the Ordos Basin [Elektronische Daten] [Ming Li, JianRong Gao] Volcanic rocks in the Ordos Basin are of mainly two types: one in the basin and the other along the margin of the basin. Besides those along the margin, the marginal volcanic rocks also include the volcanic rocks in the Yinshanian orogenic belt north of the basin. Based on the latest collection of gravitational and aeromagnetic data, here we interpret basement faults in the Ordos Basin and its peripheral region, compare the faults derived from aeromagnetic data with those from seismic data, and identify the geological ages of the fault development. Two aeromagnetic anomaly zones exist in the NE-trending faults of the southern basin, and they are in the volcanic basement formed in pre-Paleozoic. These NE-trending faults are the channel of volcanic material upwelling in the early age (Archean-Neoproterozoic), where igneous rocks and sedimentary rocks stack successively on both sides of the continental nucleus. In the Cambrian, the basin interior is relatively stable, but in the Late Paleozoic and Mesozoic, the basin margin underwent a number of volcanic activities, accompanied by the formation of nearly north-south and east-west basement faults in the basin periphery and resulting in accumulation of great amount of volcanic materials. Volcanic tuff from the basin periphery is discovered in the central basin and volcanic materials are exposed in the margins of the basin. According to the source-reservoir-cap rock configuration, the basin peripheral igneous traps formed in the Indosinian-Early Yanshanian and Late Hercynian are favorable exploration objectives, and the volcanic rocks in the central basin are the future target of exploration. Science China Press and Springer-Verlag Berlin Heidelberg, 2010 Ordos Basin nationallicence volcanic rocks nationallicence basement fault nationallicence aeromagnetic anomaly nationallicence hydrocarbon potential nationallicence Li Ming PetroChina Research Institute of Petroleum Exploration and Development, 100083, Beijing, China aut Gao JianRong PetroChina Research Institute of Petroleum Exploration and Development, 100083, Beijing, China aut Science China Earth Sciences SP Science China Press 53/11(2010-11-01), 1625-1633 1674-7313 53:11<1625 2010 53 11430 https://doi.org/10.1007/s11430-010-4042-8 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11430-010-4042-8 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Li Ming PetroChina Research Institute of Petroleum Exploration and Development, 100083, Beijing, China aut NATIONALLICENCE 700 1- Gao JianRong PetroChina Research Institute of Petroleum Exploration and Development, 100083, Beijing, China aut NATIONALLICENCE 773 0- Science China Earth Sciences SP Science China Press 53/11(2010-11-01), 1625-1633 1674-7313 53:11<1625 2010 53 11430 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer