Details
| Original language | English |
|---|---|
| Pages (from-to) | 1799-1809 |
| Number of pages | 11 |
| Journal | AAPG bulletin |
| Volume | 94 |
| Issue number | 12 |
| Publication status | Published - Dec 2010 |
Abstract
Triangle zones are widespread structural elements that link fold and thrust belts with their foreland basins. We present a structural analysis of an outcrop-scale (∼6 m [20 ft] wide) triangle zone that is exposed in the siliciclastic Carboniferous strata of the Harz Mountains in northern Germany. The geometry of the triangle zone is critically compared with larger outcrop and seismic-scale structures. The external form of the triangle zone is the same as that proposed for larger examples, with two bounding detachments that dip in opposing directions. However, the interior of the triangle zone is characterized by tight to isoclinal folds. We demonstrate how the triangle zone probably evolved from a fault-bend fold, which accreted further folds behind it. This is an alternative fold-based interpretation for a structure that is commonly modeled as a duplex stack. We present the resulting consequences for seismic interpretation and hydrocarbon reservoir evaluation.
ASJC Scopus subject areas
- Energy(all)
- Fuel Technology
- Energy(all)
- Energy Engineering and Power Technology
- Earth and Planetary Sciences(all)
- Geology
- Earth and Planetary Sciences(all)
- Geochemistry and Petrology
- Earth and Planetary Sciences(all)
- Earth and Planetary Sciences (miscellaneous)
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In: AAPG bulletin, Vol. 94, No. 12, 12.2010, p. 1799-1809.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Structure and kinematics of an outcrop-scale fold-cored triangle zone
AU - Tanner, David Colin
AU - Brandes, Christian
AU - Leiss, Bernd
PY - 2010/12
Y1 - 2010/12
N2 - Triangle zones are widespread structural elements that link fold and thrust belts with their foreland basins. We present a structural analysis of an outcrop-scale (∼6 m [20 ft] wide) triangle zone that is exposed in the siliciclastic Carboniferous strata of the Harz Mountains in northern Germany. The geometry of the triangle zone is critically compared with larger outcrop and seismic-scale structures. The external form of the triangle zone is the same as that proposed for larger examples, with two bounding detachments that dip in opposing directions. However, the interior of the triangle zone is characterized by tight to isoclinal folds. We demonstrate how the triangle zone probably evolved from a fault-bend fold, which accreted further folds behind it. This is an alternative fold-based interpretation for a structure that is commonly modeled as a duplex stack. We present the resulting consequences for seismic interpretation and hydrocarbon reservoir evaluation.
AB - Triangle zones are widespread structural elements that link fold and thrust belts with their foreland basins. We present a structural analysis of an outcrop-scale (∼6 m [20 ft] wide) triangle zone that is exposed in the siliciclastic Carboniferous strata of the Harz Mountains in northern Germany. The geometry of the triangle zone is critically compared with larger outcrop and seismic-scale structures. The external form of the triangle zone is the same as that proposed for larger examples, with two bounding detachments that dip in opposing directions. However, the interior of the triangle zone is characterized by tight to isoclinal folds. We demonstrate how the triangle zone probably evolved from a fault-bend fold, which accreted further folds behind it. This is an alternative fold-based interpretation for a structure that is commonly modeled as a duplex stack. We present the resulting consequences for seismic interpretation and hydrocarbon reservoir evaluation.
UR - http://www.scopus.com/inward/record.url?scp=78651390030&partnerID=8YFLogxK
U2 - 10.1306/06301009188
DO - 10.1306/06301009188
M3 - Article
AN - SCOPUS:78651390030
VL - 94
SP - 1799
EP - 1809
JO - AAPG bulletin
JF - AAPG bulletin
SN - 0149-1423
IS - 12
ER -