Seismic Characterization of Hypogenic Karst Systems Associated with Deep Hydrothermal Fluids in the Middle-Lower Ordovician Yingshan Formation of the Shunnan Area, Tarim Basin, NW China
Two fundamental forms of hypogenic karst systems (lateral stratiform hypogenic and cross-formational fault-vein hypogenic karst system) are distinguished mainly by differential effects of preexisting faults. In seismic cross sections, hypogenic karst systems are expressed as complex string-beads-lik...
Saved in:
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2017-01-01
|
| Series: | Geofluids |
| Online Access: | http://dx.doi.org/10.1155/2017/8094125 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832551634142494720 |
|---|---|
| author | Hongtao Zhu Xiu Zhu Honghan Chen |
| author_facet | Hongtao Zhu Xiu Zhu Honghan Chen |
| author_sort | Hongtao Zhu |
| collection | DOAJ |
| description | Two fundamental forms of hypogenic karst systems (lateral stratiform hypogenic and cross-formational fault-vein hypogenic karst system) are distinguished mainly by differential effects of preexisting faults. In seismic cross sections, hypogenic karst systems are expressed as complex string-beads-like seismic reflections associated with faults. In this study, a new seismic characterization workflow was developed including seismic amplitude thresholding, fault interpretation, pickup, and merge display to enhance the description of the spatial distribution and coupling of hypogenic karst system and faults. The results suggest that the lateral stratiform hypogenic karst systems are predominantly developed at the top of the secondary faults, presenting an overall of “layered distribution and finger-like interaction” features. The cross-formational fault-vein hypogenic karst systems are developed around faults and characterized by dendritic distribution. Furthermore, we infer that the development pattern of hypogenic karst systems has been produced by the interplay of the faults, preexisting epigenic karst systems, and lateral carrier-beds, which together combine the complex hydrothermal migration pathways of fluids with the characteristics of vertical and horizontal combined pathways. In addition, some possible controlling factors (e.g., sequence stratigraphic boundaries, paleogeomorphology, and sedimentary facies) that can influence the development of these hypogenic karst systems have been discussed in detail. |
| format | Article |
| id | doaj-art-d21b265a53b548bcb04397f7bfdb1811 |
| institution | Kabale University |
| issn | 1468-8115 1468-8123 |
| language | English |
| publishDate | 2017-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geofluids |
| spelling | doaj-art-d21b265a53b548bcb04397f7bfdb18112025-02-03T06:01:04ZengWileyGeofluids1468-81151468-81232017-01-01201710.1155/2017/80941258094125Seismic Characterization of Hypogenic Karst Systems Associated with Deep Hydrothermal Fluids in the Middle-Lower Ordovician Yingshan Formation of the Shunnan Area, Tarim Basin, NW ChinaHongtao Zhu0Xiu Zhu1Honghan Chen2Key Laboratory of Tectonics and Petroleum Resources, China University of Geosciences, Ministry of Education, Wuhan 430074, ChinaKey Laboratory of Tectonics and Petroleum Resources, China University of Geosciences, Ministry of Education, Wuhan 430074, ChinaKey Laboratory of Tectonics and Petroleum Resources, China University of Geosciences, Ministry of Education, Wuhan 430074, ChinaTwo fundamental forms of hypogenic karst systems (lateral stratiform hypogenic and cross-formational fault-vein hypogenic karst system) are distinguished mainly by differential effects of preexisting faults. In seismic cross sections, hypogenic karst systems are expressed as complex string-beads-like seismic reflections associated with faults. In this study, a new seismic characterization workflow was developed including seismic amplitude thresholding, fault interpretation, pickup, and merge display to enhance the description of the spatial distribution and coupling of hypogenic karst system and faults. The results suggest that the lateral stratiform hypogenic karst systems are predominantly developed at the top of the secondary faults, presenting an overall of “layered distribution and finger-like interaction” features. The cross-formational fault-vein hypogenic karst systems are developed around faults and characterized by dendritic distribution. Furthermore, we infer that the development pattern of hypogenic karst systems has been produced by the interplay of the faults, preexisting epigenic karst systems, and lateral carrier-beds, which together combine the complex hydrothermal migration pathways of fluids with the characteristics of vertical and horizontal combined pathways. In addition, some possible controlling factors (e.g., sequence stratigraphic boundaries, paleogeomorphology, and sedimentary facies) that can influence the development of these hypogenic karst systems have been discussed in detail.http://dx.doi.org/10.1155/2017/8094125 |
| spellingShingle | Hongtao Zhu Xiu Zhu Honghan Chen Seismic Characterization of Hypogenic Karst Systems Associated with Deep Hydrothermal Fluids in the Middle-Lower Ordovician Yingshan Formation of the Shunnan Area, Tarim Basin, NW China Geofluids |
| title | Seismic Characterization of Hypogenic Karst Systems Associated with Deep Hydrothermal Fluids in the Middle-Lower Ordovician Yingshan Formation of the Shunnan Area, Tarim Basin, NW China |
| title_full | Seismic Characterization of Hypogenic Karst Systems Associated with Deep Hydrothermal Fluids in the Middle-Lower Ordovician Yingshan Formation of the Shunnan Area, Tarim Basin, NW China |
| title_fullStr | Seismic Characterization of Hypogenic Karst Systems Associated with Deep Hydrothermal Fluids in the Middle-Lower Ordovician Yingshan Formation of the Shunnan Area, Tarim Basin, NW China |
| title_full_unstemmed | Seismic Characterization of Hypogenic Karst Systems Associated with Deep Hydrothermal Fluids in the Middle-Lower Ordovician Yingshan Formation of the Shunnan Area, Tarim Basin, NW China |
| title_short | Seismic Characterization of Hypogenic Karst Systems Associated with Deep Hydrothermal Fluids in the Middle-Lower Ordovician Yingshan Formation of the Shunnan Area, Tarim Basin, NW China |
| title_sort | seismic characterization of hypogenic karst systems associated with deep hydrothermal fluids in the middle lower ordovician yingshan formation of the shunnan area tarim basin nw china |
| url | http://dx.doi.org/10.1155/2017/8094125 |
| work_keys_str_mv | AT hongtaozhu seismiccharacterizationofhypogenickarstsystemsassociatedwithdeephydrothermalfluidsinthemiddlelowerordovicianyingshanformationoftheshunnanareatarimbasinnwchina AT xiuzhu seismiccharacterizationofhypogenickarstsystemsassociatedwithdeephydrothermalfluidsinthemiddlelowerordovicianyingshanformationoftheshunnanareatarimbasinnwchina AT honghanchen seismiccharacterizationofhypogenickarstsystemsassociatedwithdeephydrothermalfluidsinthemiddlelowerordovicianyingshanformationoftheshunnanareatarimbasinnwchina |