Suzon Jammes

Suzon Jammes
Texas State University | TxSt · Department of Geography

PhD

About

26
Publications
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Introduction
Skills and Expertise

Publications

Publications (26)
Article
Full-text available
Orogenesis in the Variscan belt of Western Europe was followed by a major magmatic event during the Permian that formed a mafic lower crust by crystallizing pyroxenite and gabbros from mantle‐derived melts at the base of the continental crust. Partial melting of the asthenosphere left a significantly depleted mantle that was progressively incorpora...
Article
Full-text available
To investigate the effect of crustal heterogeneities inherited from previous tectonic phases on magma-poor rifting processes, we performed numerical experiments of lithospheric extension with initial conditions that included strength variations from inherited crustal fabrics. Crustal fabrics were introduced in the model by using an element-wise bim...
Poster
Full-text available
Slow-spreading mid-ocean ridges develop large offset normal faults, or detachments, that exhume mantle-derived peridotites to the seafloor. Successive detachments that flip polarity (flip-flop detachments) have been documented in corridors of nearly amagmatic spreading at the eastern Southwest Indian Ridge (SWIR; Sauter et al., Nature Geosci., 2013...
Article
Full-text available
Although the Wilson cycle is usually considered in terms of wide oceans floored with normal oceanic crust, numerous orogens result from the closure of embryonic oceans. We discuss how orogenic and post-orogenic processes may be controlled by the size/maturity of the inverted basin. We focus on the role of lithospheric mantle in controlling deformat...
Article
Full-text available
We investigate how lithospheric scale compositional heterogeneities affect kilometric scale deformation processes. To this end, we perform numerical experiments of lithospheric extension in which we vary the Moho temperature and the mineralic composition of the mantle and the crust. In both the crust and the mantle we use a explicit bimineralic com...
Article
Full-text available
We investigate how localization and delocalization of deformation occurs in a bimineralic material composed of a strong plagioclase and a weaker quartz phase. We perform numerical, meter-scale shear experiments in which we vary the temperature and the ratio of the two mineral phases. Three micromechanical deformation fields are identified according...
Article
Many mountain belts exhibit significant along-strike variation in structural style with changes in the width of the orogen, the geometry and kinematics of the crustal-scale thrust system, and the degree of partitioning between pro- and retro-wedge deformations. Although the main factors controlling first-order structural style are understood, the c...
Article
Full-text available
The strength of the crust and the mantle lithosphere are strongly influenced by the temperature, the thickness and the composition of the crust and mantle lithosphere, and by inherited weaknesses. It consequently strongly depends on the geodynamic setting and is then expected to be different from one orogen to another, which might explain the diver...
Article
Local inherited weaknesses and regional inherited crust and mantle lithosphere structure are expected to control the structural style of tectonic inversion of rift zones and passive margins. However it is still unclear to which extent structural inheritance plays a role during inversion tectonics and contributes to the structural style of inversion...
Article
The combination of deep seismic reflection profiles with other geophysical methods has in recent years rendered the crustal structure of many orogens accessible. The diversity of observed orogenic crustal structures suggests that deformation processes that account for the formation of mountain belts differ from region to region. The influence on co...
Article
Full-text available
Recent observations and models of continental rifting in magma-poor environments have led to the concept of multiphase stages of lithospheric extension. In these concepts it is shown that extreme crustal thinning of the crust predates exhumation of lower crustal and subcontinental mantle rocks during final rifting. The Bay of Biscay is a V-shaped o...
Article
Full-text available
Prerift salt layers associated with extensional detachment faults exhuming mantle and deeper crustal rocks at the sea floor are observed in the Parentis and Arzacq-Mauleon basins located at the eastern termination of the Bay of Biscay. How detachment faults interact with salt in hyperextended rift systems is yet little understood. Based on field ob...
Article
Full-text available
The Parentis and Arzacq-Mauleon basins located in front of the V-shaped oceanic propagator in the Bay of Biscay present evidence for extreme crustal thinning. In this paper we investigate the 3D structure of these rift basins, based on field observations and the interpretation of seismic data. We compare these results with those obtained from two d...
Article
Factors controlling the structural style of tectonic inversion of rift zones and passive margins are still not well understood. Both local inherited weaknesses and regional inherited crust and mantle lithosphere structure are believed to contribute to the structural style of inversion but it still unclear to which extent structural inheritance play...
Article
The tectono-sedimentary record of hyper-extended, deep-water rifted margins is yet poorly understood due to the limited access to direct observations. The study of fossil analogues shows that the major change from low strain (e.g. North Sea) to high-strain rift systems is controlled by the occurrence of low-angle detachment systems associated with...
Article
The Bay of Biscay-Western Pyrenees represents a V-shaped oceanic basin that opened in Aptian-Albian time within an oblique environment. In front of this propagating ocean several rift basins preserve evidence for extreme crustal thinning (e.g. Parentis, Arzacq-Mauleon, Cantabrian basins). Thus it represents an excellent natural laboratory to study...
Article
In this paper we describe the tectonosedimentary evolution and its subsequent inversion of a basin that underwent extreme crustal thinning in a transtensional setting ahead of a propagating ocean in the western Pyrenees. The Labourd-Mauléon area situated in the western Pyrenees, at the termination of the V-shaped Bay of Biscay, is an ideal natural...
Article
The Bay of Biscay represents a V-shaped oceanic basin that opened in Aptian-Albian time within a transtensional setting. During the opening of the Bay of Biscay, several rift basins (e.g. Parentis, Mauleon, Cantabrian basins) formed in front of this propagating ocean. During the subsequent Pyrenean compression in Late Cretaceous to Oligocene time,...
Conference Paper
What are the processes controlling extreme crustal thinning observed in front of a propagating ocean? Young V-shaped basins such as the Gulf of California, the Woodlark basin, the Red Sea, or the ancient Bay of Biscay-Western Pyrenees are natural laboratories where such processes can be studied. In the case of the Bay of Biscay, previous studies su...
Article
The Bay of Biscay-Western Pyrenees is the ideal natural laboratory to study extreme crustal thinning within a transtensional environment. This area underwent several rift phases with a major phase occurring in late Jurassic to early Cretaceous time, responsible for the opening of the Bay of Biscay and the formation of smaller rift basins, the Paren...
Article
Detachment faults are widely regarded as playing an important role in crustal thinning and mantle exhumation at magma-poor rifted margins. However, how important are these structures and what is their role in crustal thinning and mantle exhumation? In our presentation, we review the pertinent observations made along the Iberia-Newfoundland, Western...

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Project (1)
Project
The Caribbean region has undergone a complex plate kinematics evolution due to the interaction between Central Atlantic pre-subduction paleogeography and Caribbean subduction dynamics. To better understand the initiation and dynamics of the Caribbean subduction it is important to determine the pre-subduction template. The aim of this project is to unravel this template and to better understand how this may have controlled subduction initiation.