Romanian term
cute diapire
3 +3 | diapiric folds | Oana Popovici |
4 +1 | anticlinal fold/saddle | cristina48 |
May 13, 2009 09:23: Maria Diaconu changed "Level" from "Non-PRO" to "PRO"
Proposed translations
diapiric folds
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Note added at 16 mins (2009-05-13 09:38:05 GMT)
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http://search.datapages.com/data/doi/10.1306/5D25CBD9-16C1-1...
All the diapiric (or diapirlike) folds found are along major structural trends that delineate the principal physiographic elements of the southeastern region of the Bering Sea.
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Note added at 17 mins (2009-05-13 09:39:35 GMT)
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http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6V...
Drumlinoids contain diapiric folds in their cores, trending parallel to their axes. The Burtnieks drumlin field was formed during the last activation of the North Vidzeme tongue and three main phases may be distinguished in the development of its glaciotectonic structures.
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Note added at 18 mins (2009-05-13 09:40:53 GMT)
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http://homepage.ufp.pt/biblioteca/GlossarySaltTectonics/Page...
Diapiric Fold (Ruig, M. J., 1995)
The expression used by several authors, in Eastern Prebetic Foldbelt, in reference to folds in the overburden that are supposedly cored by Triassic evaporites. These folds are thought to have been forced by the active diapiric rise of evaporites. However, when they formed, no clear density inversion existed between the Triassic evaporites and their carbonate cover, which precludes uplift of large blocks of the overburden. It seems these folds were formed by buckling, under lateral compression, rather than by vertical diapiric motion.
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Note added at 24 mins (2009-05-13 09:46:16 GMT) Post-grading
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http://pubs.usgs.gov/bul/b2166/b2166.pdf
In brief, the upward thrust of a rising salt diapir forces
up the enveloping mudstones, and they, in turn, push up and
locally overturn the overlying sedimentary strata to form a
major upwarp—a salt-cored anticline, or diapiric fold, as
these upwarps are sometimes called (fig. 2).
La pagina 6, figura unei sectiuni transversale:
Figure 2.
Cross section through a diapiric fold (salt-cored anticline).
Arrows indicate general direction of movement of the mobile,
plastic salt and mudstone. In places, upward vertical forces,
stemming from the intrusive salt diapir, are translated laterally into
horizontal compressive forces. Scale is approximate.
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Note added at 26 mins (2009-05-13 09:48:32 GMT) Post-grading
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As the salt core of a ridgelike diapiric fold begins to dissolve
in the subsurface, the crestal part of the fold either subsides
between boundary faults or sinks into the newly formed
voids (fig. 3
B
). Erosion quickly destroys the foundered remnants.
The upturned limbs of the fold, lacking support, fail
and sag to form paired, facing monoclines (fig. 3
C
).
These salt-cored upwarps have been called
anticlines, salt-cored anticlines, and diapiric folds. Figure 5
illustrates the difference between the terms, and why the
term “anticline” may be misleading.
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Note added at 27 mins (2009-05-13 09:49:01 GMT) Post-grading
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:-)
anticlinal fold/saddle
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Note added at 11 minute (2009-05-13 09:33:28 GMT)
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La pl. anticlinal folds/saddles
agree |
Florina-Livia Angheluta (X)
9 mins
|
MUlţumesc, Florina
|
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