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Overturned geopetal structures formed by solution of sulfates, Triassic (Rhaetian) Portoro limestone, Portovenere area (la Spezia), Liguria, Italy
Year:
1993
Source of publication :
Carbonates and Evaporites
Authors :
Graber, Ellen
;
.
Volume :
8
Co-Authors:
Folk, R.L., Department of Geological Sciences, University of Texas at Austin, Austin, 78713-7909, Texas, United States
Tiezzi, P.A., Department of Geological Sciences, University of Texas at Austin, Austin, 78713-7909, Texas, United States
Pursell, V.J., Department of Geological Sciences, University of Texas at Austin, Austin, 78713-7909, Texas, United States
Graber, E.R., Department of Geological Sciences, University of Texas at Austin, Austin, 78713-7909, Texas, United States
Greenberg, J.G., Department of Geological Sciences, University of Texas at Austin, Austin, 78713-7909, Texas, United States
Miller, J., Department of Geological Sciences, University of Texas at Austin, Austin, 78713-7909, Texas, United States
Facilitators :
From page:
39
To page:
49
(
Total pages:
11
)
Abstract:
The Triassic Portoro limestone of NW Italy contains four kinds of features that indicate the former presence of sulphates: (1) isolated single crystals now pseudomorphed by calcite; (2) nodules encrusted with large pseudomorphs on their surfaces; (3) single elliptical nodules (gnocchi); and (4) large amoeba-shaped masses (PAM's). All of these features show varying amounts of internal geopetal sediment accumulated during solution of the sulphate minerals. This sediment, now in the tops of the features, plays an important role in deciphering the complex structural geology by documenting tectonic overturning. The sulphates appear to be late diagenetic features, and their later dissolution was a consequence of fracturing during structural deformation. © 1993 Springer.
Note:
Related Files :
aragonite
Dissolution
geopetal stucture
Italy (site)
Italy, Liguria, Portovenere
Portoro Limestone
soil
sulphate
Triassic
Show More
Related Content
More details
DOI :
10.1007/BF03175161
Article number:
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
29852
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:49
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Scientific Publication
Overturned geopetal structures formed by solution of sulfates, Triassic (Rhaetian) Portoro limestone, Portovenere area (la Spezia), Liguria, Italy
8
Folk, R.L., Department of Geological Sciences, University of Texas at Austin, Austin, 78713-7909, Texas, United States
Tiezzi, P.A., Department of Geological Sciences, University of Texas at Austin, Austin, 78713-7909, Texas, United States
Pursell, V.J., Department of Geological Sciences, University of Texas at Austin, Austin, 78713-7909, Texas, United States
Graber, E.R., Department of Geological Sciences, University of Texas at Austin, Austin, 78713-7909, Texas, United States
Greenberg, J.G., Department of Geological Sciences, University of Texas at Austin, Austin, 78713-7909, Texas, United States
Miller, J., Department of Geological Sciences, University of Texas at Austin, Austin, 78713-7909, Texas, United States
Overturned geopetal structures formed by solution of sulfates, Triassic (Rhaetian) Portoro limestone, Portovenere area (la Spezia), Liguria, Italy
The Triassic Portoro limestone of NW Italy contains four kinds of features that indicate the former presence of sulphates: (1) isolated single crystals now pseudomorphed by calcite; (2) nodules encrusted with large pseudomorphs on their surfaces; (3) single elliptical nodules (gnocchi); and (4) large amoeba-shaped masses (PAM's). All of these features show varying amounts of internal geopetal sediment accumulated during solution of the sulphate minerals. This sediment, now in the tops of the features, plays an important role in deciphering the complex structural geology by documenting tectonic overturning. The sulphates appear to be late diagenetic features, and their later dissolution was a consequence of fracturing during structural deformation. © 1993 Springer.
Scientific Publication
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