New insights in the origin of cone-in-cone structures

Previous theories on cone-in-cone structure origin have failed to explain some of its features, such as the absence of cone-in-cone in veins other than horizontal and the cross-cutting relations of conical surfaces to detritical clay films. They have neither taken in account the importance of pore p...

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Guardado en:
Detalles Bibliográficos
Publicado: 1994
Materias:
concretion
cone-in-cone structure
hypothesis
pore pressure
shale
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_08912556_v9_n2_p172_SellesMartinez
http://hdl.handle.net/20.500.12110/paper_08912556_v9_n2_p172_SellesMartinez
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_08912556_v9_n2_p172_SellesMartinez
record_format dspace
spelling paper:paper_08912556_v9_n2_p172_SellesMartinez2025-07-30T18:23:32Z New insights in the origin of cone-in-cone structures concretion cone-in-cone structure hypothesis pore pressure shale Previous theories on cone-in-cone structure origin have failed to explain some of its features, such as the absence of cone-in-cone in veins other than horizontal and the cross-cutting relations of conical surfaces to detritical clay films. They have neither taken in account the importance of pore pressures in the process of growth of veins and concretions nor the effects of its fall in the deformation of these calcite bodies. A new hypothesis for cone-in-cone origin is presented, which states that cones are a secondary feature. They are superimposed on crystalline aggregates that grow in overpressured chambers and formed as a result of brittle fracture induced by a decrease in pore pressure within materials having different mechanical properties (plastic host sediments and brittle calcite bodies). The acceptance of this hypothesis will help in the identification of seals in ancient diagenetic environments and in assessing depth of entrapment for fluids. © 1994 Springer. 1994 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_08912556_v9_n2_p172_SellesMartinez http://hdl.handle.net/20.500.12110/paper_08912556_v9_n2_p172_SellesMartinez
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic concretion
cone-in-cone structure
hypothesis
pore pressure
shale
spellingShingle concretion
cone-in-cone structure
hypothesis
pore pressure
shale
New insights in the origin of cone-in-cone structures
topic_facet concretion
cone-in-cone structure
hypothesis
pore pressure
shale
description Previous theories on cone-in-cone structure origin have failed to explain some of its features, such as the absence of cone-in-cone in veins other than horizontal and the cross-cutting relations of conical surfaces to detritical clay films. They have neither taken in account the importance of pore pressures in the process of growth of veins and concretions nor the effects of its fall in the deformation of these calcite bodies. A new hypothesis for cone-in-cone origin is presented, which states that cones are a secondary feature. They are superimposed on crystalline aggregates that grow in overpressured chambers and formed as a result of brittle fracture induced by a decrease in pore pressure within materials having different mechanical properties (plastic host sediments and brittle calcite bodies). The acceptance of this hypothesis will help in the identification of seals in ancient diagenetic environments and in assessing depth of entrapment for fluids. © 1994 Springer.
title New insights in the origin of cone-in-cone structures
title_short New insights in the origin of cone-in-cone structures
title_full New insights in the origin of cone-in-cone structures
title_fullStr New insights in the origin of cone-in-cone structures
title_full_unstemmed New insights in the origin of cone-in-cone structures
title_sort new insights in the origin of cone-in-cone structures
publishDate 1994
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_08912556_v9_n2_p172_SellesMartinez
http://hdl.handle.net/20.500.12110/paper_08912556_v9_n2_p172_SellesMartinez
_version_ 1840323349652176896

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