ALBERT — All Library Books, journals and Electronic Records Telegrafenberg

1

Monograph available for loan

Imaging, mapping and modelling continental lithosphere extension and breakup (2007)

Karner, Garry D. [Hrsg.] ; Manatschal, Gianreto [Hrsg.] ; Pinheiro, L. [Hrsg.]

London : The Geological Society

Associated volumes

add to mindlist on the mindlist

Details Availability

Call number: 9/M 07.0372

In: Geological Society special publication

Description / Table of Contents: Imaging, mapping and modelling continental lithosphere extension and breakup: an introduction, G D Karner, G Manatschal and L M Pinheiro. - Break-up of the Newfoundland-Iberia rift, B E Tucholke, D S Sawyer and J-C Sibuet. - Structure of the Flemish Cap margin, Newfoundland: insights into mantle and crustal processes during continental breakup, J R Hopper, T Funck and B E Tucholke. - Early Cretaceous motion of Flemish Cap with respect to North America: implications on the formation of Orphan Basin and SE Flemish Cap-Galicia Bank conjugate margins, J-C Sibuet, S P Srivastava, M Enachescu and G D Karner. - The formation of non-volcanic rifted margins by the progressive extension of the lithosphere: the example of the West Iberian margin, T J Reston. - Roles of lithospheric strain softening and heterogeneity in determining the geometry of rifts and continental margins, R S Huismans and C Beaumont. - The role of gravitational instabilities, density structure, and extension rate in the evolution of continental margins, E Burov. - A dynamic model of rifting between Galicia Bank and Flemish Cap during opening of the North Atlantic Ocean, D L Harry and S Grandell. - A kinematic modelling approach to lithosphere deformation and basin formation: application to the Black Sea, S S Egan and D J Meredith. - Early kinematic history of the Goban Spur rifted margin derived from a new model of continental breakup and sea-floor spreading initiation, D Healy and N J Kusznir. - The boundary between continental rifting and seafloor spreading in the Woodlark Basin, Papua New Guinea, A M Goodliffe and B Taylor. - Nature of the continent-ocean transition zone along the southern Australian continental margin: a comparison of the Naturaliste Plateau, SW Australia, and the central Great Australian Bight sectors, N G Direen, I Borissova, H M J Stagg, J B Colwell and P A Symonds. - Constraints on the deformation and rupturing of continental lithosphere of the Red Sea: the transition from rifting to drifting, J R Cochran and G D Karner. - Observations from the Alpine Tethys and Iberia Newfoundland margins pertinent to the interpretation of continental breakup, G Manatschal, O Muntener, L L Lavier, T A Minshull and G Peron-Pinvidic. - Overview of tectonic settings related to the rifting and opening of Mesozoic ocean basins in the Eastern Tethys: Oman, Himalayas and Eastern Mediterranean regions, A H F Robertson. - Continental lithospheric thinning and breakup in response to upwelling divergent mantle flow: application to the Woodlark, Newfoundland, and Iberia margins, N J Kusznir G D Karner. - Observations from the Basin and Range Province (western United States) pertinent to the interpretation of regional detachment faults, N Christie-Blick, M H Anders, S Wills, C D Walker and B Renik. - Effects of initial weakness on rift architecture, S Dyksterhuis, P Rey, R D Müller and L Moresi. - Incompressible viscous formulations for deformation and yielding of the lithosphere, L Moresi, H-B Muhlhaus, V Lemiale and D May.

Type of Medium: Monograph available for loan

Pages: vi, 482 S.

ISBN: 1862392285

Series Statement: Geological Society special publication 282

Classification:

Lithosphere

Location: Reading room

Branch Library: GFZ Library

Permalink

	Location	Call Number	Expected	Availability

Others were also interested in ...

BOOK

Link to Library Catalog

S·F·X

2

Unknown

Imaging, Mapping and Modelling Continental Lithosphere Extension and Breakup (2007)

Geological Society (London, U.K.) ; Karner, G. D. ; Manatschal, G. ; [et al.]

London : The Geological Society

add to mindlist on the mindlist

Details

Description / Table of Contents: This book summarizes our present understanding of the formation of passive continental margins and their ocean–continent transitions. It outlines the geological, geophysical and petrological observations that characterize extensional systems, and how such observations can guide and constrain dynamic and kinematic models of continental lithosphere extension, breakup and the inception of organized sea-floor spreading. The book focuses on imaging, mapping and modelling lithospheric extensional systems, at both the regional scale using dynamic models to the local scale of individual basins using kinematic models, with an emphasis on capturing the extensional history of the Iberia and Newfoundland margins. The results from a number of other extensional regimes are presented to provide comparisons with the North Atlantic studies; these range from the Tethyan realm and the northern Red Sea to the western and southern Australian margins, the Basin and Range Province, and the Woodlark basin of Papua New Guinea. All of these field studies, combined with lessons learnt from the modelling, are used to address fundamental questions about the extreme deformation of continental lithosphere.

Pages: Online-Ressource (482 Seiten)

ISBN: 9781862392281

URL: http://sp.lyellcollection.org/content/vol282/issue1/

Language: English

Permalink

	Location	Call Number	Expected	Availability

Others were also interested in ...

E-BOOK

Fulltext

3

Unknown

Origin of Mud Volcano Fluids in the Gulf of Cadiz (E-Atlantic) (2005)

Nuzzo, Marianne ; Hensen, Christian ; Hornibrook, E. ; [et al.]

In: [Talk] In: EGU .

add to mindlist on the mindlist

Details

Publication Date: 2012-02-23

Type: Conference or Workshop Item , NonPeerReviewed

Permalink

	Location	Call Number	Expected	Availability

Others were also interested in ...

PAPER (OCEANREP)

S·F·X

Fulltext

4

Unknown

Morphotectonics and strain partitioning at the Iberia–Africa plate boundary from multibeam and seismic reflection data (2009)

Terrinha, P. ; Matias, L. ; Vicente, J. ; [et al.]

Elsevier

In: Marine Geology, 267 (3-4). pp. 156-174.

add to mindlist on the mindlist

Details

Publication Date: 2015-01-27

Description: The Gulf of Cadiz, off SW Iberia and the NW Moroccan margin, straddles the cryptic plate boundary between Africa and Eurasia, a region where the orogenic Alpine compressive deformation in the continental collision zone passes laterally to the west to strike-slip deformation. A set of new multibeam bathymetry, multi-channel and single-channel seismic data presented here image the main morphological features of tectonic origin of a significant part of the Gulf of Cadiz from the continental shelf to the abyssal plain. These morphotectonic features are shown to result from the reactivation of deeply rooted faults that changed their kinematics from the early Mesozoic rifting, through the Late Cretaceous–Paleogene collision, to the Pliocene–Quaternary thrusting and wrenching. The old faults control deep incised, more than 100 km long canyons and valleys. Several effects of neotectonics on deep water seabed are shown. These include: i) the complex morphology caused by wrenching on the 230 km long WNW–ESE faults that produced en echelon folds on the sediments; ii) the formation of up to 5 km wide crescent shaped scours at roughly 4 km water depth by reactivation of thrusts; iii) 10 km long creep folds on the continental slope; and iv) the formation of landslides on active fault escarpments. The present day deformation is partitioned on NE–SW thrusts and WNW–ESE to W–E strike-slip faults and is propagating northwards on N–S trending thrusts along the West Iberia Margin from 35.5°N to 38°N, which should be considered for seismic hazard.

Type: Article , PeerReviewed

Format: text

Permalink

	Location	Call Number	Expected	Availability

Others were also interested in ...

PAPER (OCEANREP)

S·F·X

PDF

Fulltext

5

Unknown

Sources of mud volcano fluids in the Gulf of Cadiz - indications for hydrothermal imprint (2007)

Hensen, Christian ; Nuzzo, Marianne ; Hornibrook, E. ; [et al.]

Elsevier

In: Geochimica et Cosmochimica Acta, 71 (5). pp. 1232-1248.

add to mindlist on the mindlist

Details

Publication Date: 2019-09-23

Description: Mud volcanism in the Gulf of Cadiz occurs over a large area extending from the shelf to more than 3500 m water depth and is triggered by compressional stress along the European–African plate boundary, affecting a deeply faulted sedimentary sequence of locally more than 5 km thickness. The investigation of six active sites shows that mud volcano (MV) fluids, on average, are highly enriched in CH4, Li, B, and Sr and depleted in Mg, K, and Br. The purity of the fluids is largely controlled by the intensity of upward directed flow. Flow rates could be constrained by numerical modelling and vary between 〈0.05 and 15 cm yr−1. Application of δD–δ18O systematics identifies clay mineral dehydration, most likely within Mesozoic and Tertiary shales and marls, as the major source of fluids. Hence, Cl and Na in the pore fluids are mostly depleted below seawater values, following a general trend of dilution. However, deviations from this trend occur and are likely caused by the dissolution of halite in evaporitic deposits. Other secondary processes overprinting the original fluid composition may occur along the flow path, such as dissolution of anhydrite or gypsum and/or the formation of calcite and dolomite. Different sources of fluids are also indicated by variations in 87Sr/86Sr, which range from 0.7086 to 0.7099 at the different sites. Dehydration may be induced primarily by overburden and tectonic compression; however, very high concentrations of Li and B, specifically at Captain Arutyunov MV (CAMV) indicate additional leaching at temperatures above 150 °C, which could be explained by the injection of hot fluids along deep penetrating, major E–W strike–slip fault systems. This hypothesis is supported by the occurrence of generally thermogenic, but significantly CH4-enriched, light volatile hydrocarbon gases at CAMV which cannot be explained by shallow microbial methanogenesis. Li and Li/B ratios from different types of hot and cold vents are used to infer that high temperature signals seem to be preserved at various cold vent locations and indicate a closer coupling of both systems in continental margin environments than outlined in previous studies.

Type: Article , PeerReviewed

Format: text

Permalink

	Location	Call Number	Expected	Availability

Others were also interested in ...

PAPER (OCEANREP)

S·F·X

PDF

Fulltext

6

Unknown

Microbial methane turnover at mud volcanoes of the Gulf of Cadiz (2006)

Niemann, H. ; Duarte, J. ; Hensen, Christian ; [et al.]

Elsevier

In: Geochimica et Cosmochimica Acta, 70 . pp. 5336-5355.

add to mindlist on the mindlist

Details

Publication Date: 2019-07-03

Description: The Gulf of Cadiz is a tectonically active area of the European continental margin and characterised by a high abundance of mud volcanoes, diapirs, pockmarks and carbonate chimneys. During the R/V SONNE expedition ‘‘GAP–Gibraltar Arc Processes (SO-175)’’ in December 2003, several mud volcanoes were surveyed for gas seepage and associated microbial methane turnover. Pore water analyses and methane oxidation measurements on sediment cores recovered from the centres of the mud volcanoes Captain Arutyunov, Bonjardim, Ginsburg, Gemini and a newly discovered, mud volcano-like structure called ‘‘No Name’’ show that thermogenic methane and associated higher hydrocarbons rising from deeper sediment strata are completely consumed within the seabed. The presence of a distinct sulphate–methane transition zone (SMT) overlapping with high sulphide concentrations suggests that methane oxidation is mediated under anaerobic conditions with sulphate as the electron acceptor. Anaerobic oxidation of methane (AOM) and sulphate reduction (SR) rates show maxima at the SMT, which was found between 20 and 200 cm below seafloor at the different mud volcanoes. In comparison to other methane seeps, AOM activity (〈383 mmol m�2 year�1) and diffusive methane fluxes (〈321 mmol m�2 year�1) in mud volcano sediments of the Gulf of Cadiz are low to mid range. Corresponding lipid biomarker and 16S rDNA clone library analysis give evidence that AOM is mediated by a mixed community of anaerobic methanotrophic archaea and associated sulphate reducing bacteria (SRB) in the studied mud volcanoes. Little is known about the variability of methane fluxes in this environment. Carbonate crusts littering the seafloor of mud volcanoes in the northern part of the Gulf of Cadiz had strongly 13C-depleted lipid signatures indicative of higher seepage activities in the past. However, actual seafloor video observations showed only scarce traces of methane seepage and associated biological processes at the seafloor. No active fluid or free gas escape to the hydrosphere was observed visually at any of the surveyed mud volcanoes, and biogeochemical measurements indicate a complete methane consumption in the seafloor. Our observations suggest that the emission of methane to the hydrosphere from the mud volcano structures studied here may be insignificant at present.

Type: Article , PeerReviewed

Format: text

Permalink