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http://hdl.handle.net/2122/7882| Authors: | Paulsen, T.* Millan, C.* Pierdominici, S.* Wilson, T.* Drew, S.* ANDRIL-SMS Science Team* |
Title: | Fracture Logging of the AND-2A Core, ANDRILL Southern McMurdo Sound Project, Antarctica | Journal: | Terra Antartica | Series/Report no.: | 1/15 (2009) | Issue Date: | 2009 | Keywords: | Fractures Downhole logging Drillcore Stress Antarctica Drilling |
Subject Classification: | 04. Solid Earth::04.02. Exploration geophysics::04.02.05. Downhole, radioactivity, remote sensing, and other methods 04. Solid Earth::04.04. Geology::04.04.09. Structural geology 04. Solid Earth::04.07. Tectonophysics::04.07.99. General or miscellaneous 04. Solid Earth::04.07. Tectonophysics::04.07.05. Stress 04. Solid Earth::04.07. Tectonophysics::04.07.07. Tectonics |
Abstract: | Fractures in AND-2A drillcore were documented in this study. Over 4100 fractures of all types were logged. A population of 510 steeply-dipping, petal, petal-centreline and core-edge induced fractures is present, reaching a maximum density of c. 10 fractures/metre. Subhorizontal induced extension fractures are also abundant. There are 1008 natural fractures in the core, including faults, brecciated zones, veins and sedimentary intrusions. Kinematic indicators document dominant normal faulting, although reverse faults are also present. The natural fractures occur in strata ranging in age from the Miocene to the Plio-Pleistocene. |
| Appears in Collections: | Article published / in press |
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| File | Description | Size | Format | |
|---|---|---|---|---|
| Paulsen_etal_TerraAnt_2008.pdf | Main article | 1.25 MB | Adobe PDF | View/Open |
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