11:45 Oct 22, 2006 |
Italian to English translations [PRO] Geology | |||||||
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| Selected response from: Patricia Crotty Local time: 11:42 | ||||||
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Summary of answers provided | ||||
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4 | horst (structure) |
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3 | positive horst structure |
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positive horst structure Explanation: Some oblique structures suggest a subsidiary strike-slip array. Shallow subsurface structure in Eocene strata mapped from coal exploration logs across the central portion of the SRFZ in Cleveland County, AR suggest a restraining-bend anticline/horst near the site of a moderate 1911 earthquake and the young river-bank anticline. This positive structure strikes NE, at a high angle to the SRFZ strike http://adsabs.harvard.edu/abs/2004AGUFM.T41F1289C "It’s appeared that there is high-angle reverse fault in the north of the Takenoyu Fault by geologic correlation of the wells. A pair of these faults forms a local horst structure. These faults form a nearly vertical zone of high permeability with several hundreds meters wide as the geothermal reservoir." www.geothermie.de/egec-geothernet/ci_prof/asia/japan/0388.P... |
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horst (structure) Explanation: A horst is by definition a structure uplifted along faults, so there is no need to define "positive". What I think they are saying here is that the trachytes were initially uplifted by a horst movement, traces of which can still be seen today (in the dome shape) |
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