Structural History of the Buffalo Fork Fault and Ancestral Washakie Range, Wyoming

The Buffalo Fork fault is an east-dipping, north-trending reverse\thrust fault which lies along the west side of the Washakie Range in northwestern Wyoming (Love, 1975). This fault was active during the Laramide Orogeny (60-55 million years ago), during which time it uplifted the Ancestral Washakie Range. The purpose of this on-going research project is to determine the displacement vector of the Buffalo Fork fault and to relate this to the regional kinematic pattern of Laramide deformation in northwestern Wyoming. Previous field work by the author (Lageson, 1987) has shown that other Laramide faults in northwestern Wyoming experienced significant components of oblique-slip, depending on their orientation. If a regional pattern of displacement can be determined from several faults, then it may be possible to reconstruct the crustal stress field during the Laramide Orogeny. This study of the Buffalo Fork fault is one step toward this greater goal.

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Structural history of the metamorphic sole of the Bay of Islands Complex, western Newfoundland

Canadian Journal of Earth Sciences ◽

10.1139/e95-045 ◽

1995 ◽

Vol 32 (5) ◽

pp. 533-544 ◽

Cited By ~ 6

Author(s):

C. L. Fergusson ◽

P. A. Cawood

Keyword(s):

Mantle Wedge ◽

Pillow Lava ◽

The West ◽

Early Ordovician ◽

Shear Sense ◽

Structural History ◽

Two Factors ◽

History Of ◽

East West ◽

Over Time

Displacement of the Early Ordovician ophiolitic Bay of Islands Complex was accompanied by the development of a metamorphic sole in underlying accreted gabbro, mafic pillow lava, pelite, and psammite. The metamorphic sole contains up to 130 m of amphibolite, underlain by up to 80 m of mafic and pelitic–psammitic schist, which, in turn, overlies chlorite-bearing rocks that overlie mudstone-matrix mélange. A major foliation, locally mylonitic and (or) isoclinally folded, is pervasively developed in the greenschists and amphibolites. An extension lineation is widely developed and plunges north in amphibolite and trends east–west in greenschist, consistent with a changing direction of thrust transport from northerly to westerly as the mantle wedge cooled over time. Shear sense criteria in greenschist facies pelitic–psammitic schist indicate thrusting towards the west. In the southwestern Blow-Me-Down massif, two sets of folds postdate development of accretion-related S-L fabrics and resulted in a substantial widening of the metamorphic sole. Late disruption by foliation-parallel, low-angle extensional and steep faults have excised parts of the metamorphic sole, resulting in a marked discontinuity of units along strike. Extensional faults were induced by gravitational spreading as the Coulomb thrust wedge, containing the ophiolite, metamorphic sole, and underlying mélange unit, became supercritical. This was probably due to a combination of two factors: (1) development of a substantially weakened basal mélange layer and (2) lowering of the basal slope of the wedge as it was thrust over the Ordovician slope onto the shelf.

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Primeros resultados de la excavación del castillo medieval de Dos Hermanas (Montemayor, Córdoba)

X ◽

10.4995/fortmed2020.2020.11369 ◽

2020 ◽

Author(s):

Javier López Rider ◽

Santiago Rodero Pérez ◽

José Manuel Reyes Alcalá

Keyword(s):

Sixteenth Century ◽

Field Work ◽

The West ◽

Work Support ◽

New Information ◽

First Results ◽

History Of ◽

High Degree ◽

Southern Wall ◽

Round Pass

First results of the excavation of the medieval castle of Dos Hermanas (Montemayor, Cordoba)In the south of the kingdom of Córdoba, there is the castle so-called Dos Hermanas, located in the municipality of the current town of Montemayor. It has been considered that the construction of the castle of this stately town was the result of the first moments of decline of the fortress of Dos Hermanas, located on the bank of the Carchena stream. Currently, a first excavation campaign has been carried out that brings us closer to the anthropic occupation of the site. At the same time, the archival research gives new information to the history of the site, exceeding the date of 1340, when Don Martín Alonso de Córdoba partially destroyed the Arab fortress of Dos Hermanas to build the castle of Montemayor. The first data extracted from the field work support the written sources, providing us with new data that allow us to make a more complete and novel interpretation. The survival of part of the facilities of the Dos Hermanas castle with an occupation from Roman times to the sixteenth century that shows the total non-depopulation of the place in the fourteenth century, as previously thought. A high degree of conservation of the structures found inside the wall enclosure appears a southern bay with stables with nine mangers. To the west, there is a vain and an angled staircase that allowed access from the parade ground until the round pass over the main door, which is also preserved. The objective of this proposal will be to present these first results of the archaeological intervention centered on the southern wall of the castle. These research works are accompanied by a consolidation project of the main structures, all financed by the Provincial Delegation of Cordoba and Montemayor Town Hall, whose continuity is developed in 2019 and 2020.

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VII.—The Structural History of the Moine Thrust Zone at Lochcarron, Wester Ross

Transactions of the Royal Society of Edinburgh ◽

10.1017/s0080456800100134 ◽

1960 ◽

Vol 64 (7) ◽

pp. 139-168 ◽

Cited By ~ 61

Author(s):

M. R. W. Johnson

Keyword(s):

The West ◽

Crystalline Style ◽

Inverted Order ◽

Structural History ◽

Moine Rocks ◽

Thrust Zone ◽

History Of ◽

Caledonian Orogeny ◽

Moine Thrust Zone ◽

New Evidence

SynopsisTorridonian and Lewisian rocks lying in inverted order between the Kishorn thrust and the Moine thrust, and Moine rocks, lying above the Moine thrust, exhibit a remarkable parallelism of structure.New evidence shows that three sets of minor structures have been developed in the formations during the Caledonian movements. At least two of these sets pre-date the Moine thrust movements. The mylonites, which are not restricted to the vicinity of the Moine thrust outcrop, belong to an earlier movement phase than these structures and are not directly related to the clean-cut thrust movements. They appear to represent narrow zones of shearing and sliding, mainly within the Lewisian gneisses that developed early in the Caledonian orogeny.There is reason to suppose that the inversion of the rocks to the west of the Moine thrust occurred before the formation of the minor structures recognized in the paper.The minor structures are described and their order of formation established. The plastic, para-crystalline style of the earlier deformation is contrasted with the post-crystalline brittle style of the later deformations.

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Major Clues in the Tectonic History of the Malverns

Geological Magazine ◽

10.1017/s0016756800082674 ◽

1947 ◽

Vol 84 (4) ◽

pp. 229-240 ◽

Cited By ~ 12

Author(s):

N. L. Falcon

Keyword(s):

Recent Work ◽

Small Area ◽

East Side ◽

The West ◽

West Side ◽

Red Sandstone ◽

Tectonic History ◽

Structural History ◽

History Of

During recent work for the D'Arcy Exploration Co. the writer found it necessary to attempt to understand the structural history of the Malvern Range. The widespread conception of violent “Armorican” earth movements, almost simultaneously acting in directions at right angles to each other in a relatively small area, did not appear satisfactory. No important tectonic contribution to Malvern literature has appeared since Groom's work published in 1899 and 1900, conveniently summarized in Geology in the Field in 1910. Text books either ignore the problems completely and generalize strangely,2 or say practically nothing about them.3 To separate fact from later theory it was necessary to go back to the original surveys. As a result the writer finds himself unable to accept Groom's conclusion on the age of the movements causing the overturning, and in places imbrication, of the Silurian and Lower Old Red Sandstone rocks on the west side of the range. He is also strongly of the opinion that the evidence for the great Malvern Fault, separating the Trias from the older rocks on the east side of the range, has been much overplayed.

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Eocene Limestones to the West of Jersey

Geological Magazine ◽

10.1017/s0016756800061549 ◽

1960 ◽

Vol 97 (4) ◽

pp. 289-298 ◽

Cited By ~ 5

Author(s):

Dennis Curry

Keyword(s):

English Channel ◽

The West ◽

Structural History ◽

History Of ◽

East West

AbstractThis note records the presence of Eocene limestones in situ on the bed of the English Channel along an east-west line to the west of the island of Jersey. The microfauna of samples of these limestones is compared with those of some other beds of similar age. There are comments on the relevance of the above discoveries to the structural history of the area.

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I 10, 4: Casa del Menandro

The Insula of the Menander at Pompeii: Volume 1: The Structures ◽

10.1093/oso/9780198134091.003.0017 ◽

1997 ◽

Author(s):

Roger Ling ◽

Paul Arthur ◽

Georgia Clarke ◽

Estelle Lazer ◽

Lesley A. Ling ◽

...

Keyword(s):

The South ◽

The West ◽

Independent Unit ◽

Structural History ◽

Service Areas ◽

History Of ◽

The One ◽

General Aspects ◽

Unitary Analysis

As stated in part one, the casa del menandro occupied more than half of the insula at the time of Pompeii’s burial; it is thus by far the largest property in the block. It also lacks a homogeneous plan, and had clearly gone through a complex (and partly unrecoverable) process of piecemeal development. These factors make it difficult to carry out any form of unitary analysis; such an analysis would inevitably be unwieldy and over-complicated. The folowing discussion will therefore break the property up into its constituent parts, examining each in turn before drawing the threads together and considering general aspects of the house, its development, functioning, and ownership. To aid the division come certain natural caesuras in the plan. The main residential core, focused on the atrium and the peristyle, is physically and functionally distinct from the two service areas, the kitchen quarter to the west, and the stableyard and staff quarters to the south-east and east. Each of these service areas is accessible from the peristyle, but each is ‘distanced’ from it by an approach corridor, and the second has its own separate entrances from the street, so could function to some extent as an independent unit. Each area, moreover, appears to have been acquired at the expense of pre-existing properties not physically connected to the Menandro; and any discussion of its structural history involves some consideration of the history of the neighbouring properties (for the stableyard area, for instance, it is necessary to include the one-room units I 10,12 and 13). Even in the central part of the house, there is something of a dichotomy between the atrium and peristyle complexes. This dichotomy is chiefly chronological, in that the atrium formed the nucleus of the original house, with perhaps no more than a small garden at the rear, while in the final house the focus had shifted to the peristyle and its surrounding rooms, even if the atrium and tablinum remained important areas of reception and passage.

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A note on John Hawkins (1761–1841) and the Hawkins archive

Archives of Natural History ◽

10.3366/anh.2000.27.2.261 ◽

2000 ◽

Vol 27 (2) ◽

pp. 261-268

Author(s):

R. J. CLEEVELY

Keyword(s):

Major Part ◽

Reference Lists ◽

The West ◽

History Of ◽

The 1960S

A note dealing with the history of the Hawkins Papers, including the material relating to John Hawkins (1761–1841) presented to the West Sussex Record Office in the 1960s, recently transferred to the Cornwall County Record Office, Truro, in order to be consolidated with the major part of the Hawkins archive held there. Reference lists to the correspondence of Sibthorp-Hawkins, Hawkins-Sibthorp, and Hawkins to his mother mentioned in The Flora Graeca story (Lack, 1999) are provided.

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Fictive Mode, ‘Journey to the West’, and Transformation of Space: ‘Ali Mubarak’s Discourses of Modernization

Comparative Critical Studies ◽

10.3366/e1744185408000062 ◽

2007 ◽

Vol 4 (3) ◽

pp. 331-358

Author(s):

WEN-CHIN OUYANG

Keyword(s):

Cultural Transformation ◽

Recent History ◽

Theoretical Principle ◽

Time And Space ◽

The West ◽

Arab Culture ◽

History Of ◽

Journey To The West

I begin my exploration of ‘Ali Mubarak (1823/4–1893) and the discourses on modernization ‘performed’ in his only attempt at fiction, ‘Alam al-Din (The Sign of Religion, 1882), with a quote from Guy Davenport because it elegantly sums up a key theoretical principle underpinning any discussion of cultural transformation and, more particularly, of modernization. Locating ‘Ali Mubarak and his only fictional work at the juncture of the transformation from the ‘traditional’ to the ‘modern’ in the recent history of Arab culture and of Arabic narrative, I find Davenport's pronouncement tantalizingly appropriate. He not only places the stakes of history and geography in one another, but simultaneously opens up the imagination to the combined forces of time and space that stand behind these two distinct yet related disciplines.

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