Results 121 to 130 of about 231 (181)

Assessing groundwater denitrification spatially is the key to targeted agricultural nitrogen regulation. [PDF]

Sci Rep
Hansen B, Aamand J, Blicher-Mathiesen G, Christiansen AV, Claes N, Dalgaard T, Frederiksen RR, Jacobsen BH, Jakobsen R, Kallesøe A, Kim H, Koch J, Møller I, Madsen RB, Schaper S, Sandersen PBE, Voutchkova DD, Wiborg I.   +17 more
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Carbonate formation and alteration in the salt diapir caprock (Paskhand salt diapir, Southern Iran)

2023
The eastern Zagros Fold and Thrust Belt (ZFTB) in Iran includes a salt tectonic province with roughly 130 salt-gypsum diapirs emerging within the Neoproterozoic-Early Cambrian Hormuz Complex. The diapirs in the ZFTB differ in composition and in their distribution of exposed caprock mélanges (CRMs).
Sadegh Adineh, Prokop Zavada, Soraya Heuss-Aßbichler, Jiri Bruthans, Mathieu Daëron, Daniel A. Petrash   +5 more
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Passive versus active salt diapirism

AAPG Bulletin, 2021
ABSTRACT Existing definitions for passive and active salt diapirism are somewhat overlapping and ambiguous. These terms are also equated to downbuilding and upbuilding, respectively, which are problematic concepts as originally conceived and even as subsequently modified.
Mark G. Rowan, Katherine A. Giles
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Mechanics of active salt diapirism

Tectonophysics, 1993
Abstract An active diapir forcefully intrudes its overburden, driven by diapir pressure that overcomes the resistance of the overburden strength. Possible causes for the driving pressure are differential loading of the source layer and a density contrast with the overburden.
D.D. Schultz-Ela, M.P.A. Jackson, B.C. Vendeville   +2 more
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Internal Kinematics of Salt Diapirs

AAPG Bulletin, 1987
ABSTRACT The internal structure of intrusive and extrusive salt bodies elucidates their external shape and the mechanism and history of diapiric emplacement—information relevant to petroleum exploration. Trace amounts of brine can act like heat to weaken salt and promote geologic creep by solution-transfer mechanisms.
C. J. Talbot, M. P. A. Jackson
openaire   +1 more source

Megaflaps adjacent to salt diapirs

AAPG Bulletin, 2016
ABSTRACT Megaflaps are steep stratal panels that extend far up the sides of diapirs or their equivalent welds. They have multiple-kilometer fold widths and structural relief and are thus distinct from smaller-scale composite halokinetic sequences. Maximum dips range from near-vertical to completely overturned.
Mark G. Rowan, Katherine A. Giles, Thomas E. Hearon, J. Carl Fiduk   +3 more
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The shaping of salt diapirs

Journal of Structural Geology, 1998
Abstract Six parameters shape the geometry of passive diapirs associated with stiff overburden: rates of salt supply ( S ′); dissolution ( D ′; sediment accumulation ( A ′); erosion ( Er′ ); extension ( E ′); and shortening ( Sh′ ). These parameters change in space and time, and hence influence the geometry of the structure as it forms.
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ALTERNATIVES TO HALOKINESIS IN SALT DIAPIRISM

Journal of Petroleum Geology, 1990
Over the past decade, and particularly in the last two or three years, there has been a change in the climate of thought on some aspects of salt geology and salt tectonics. Specifically, there has been a tendency to consider the development of many salt structures as being a result of non-halokinetic processes, in contrast to the strong emphasis placed
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Internal Kinematics of Salt Diapirs: DISCUSSION

AAPG Bulletin, 1989
Iklbot and Jackson (1987) presented a very good sum­ mary of several aspects of salt-stock configuration and emplacement as applied to the United States Gulf Coast. One aspect of this emplacement is a process they describe as "nested toroidal stream surfaces" (Iklbot and Jack­ son, 1987, p. 1083. their Figure 11) or toroidal flow.
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Seismic Recognition of Salt Diapirs

AAPG Bulletin, 1979
Abstract Seismic recognition of a salt diapir is usually based on a combination of features such as shape, virtual absence of reflections from the interior, lateral-diffraction patterns, characteristic salt-base reflection, seismic-interval velocities, and halokinetic relation with surrounding sediments and adjoining diapirs. However,
openaire   +1 more source