Basin Analysis and Petroleum Potential of Michigan Basin: Deposition and Subsidence History from Middle Ordovician (Trenton Formation) to Early Devonian: ABSTRACT

AAPG Bulletin ◽  
1984 ◽  
Vol 68 ◽  
Author(s):  
Roy D. Nurmi
Keyword(s):  
Basin Analysis ◽  
Michigan Basin ◽  
Early Devonian ◽  
Petroleum Potential ◽  
Middle Ordovician ◽  
Subsidence History

Diagenesis, Diagenetic Banding, and Porosity Evolution of the Middle Ordovician St. Peter Sandstone and Glenwood Formation in the Michigan Basin

1994 ◽  
Author(s):  
Peter A. Drzewiecki ◽  
J. Antonio Simo ◽  
P. E. Brown ◽  
E. Castrogiovanni ◽  
Gregory C. Nadon ◽  
...  
Keyword(s):  
Michigan Basin ◽  
Porosity Evolution ◽  
Middle Ordovician

Évolution paléogéographique de la marge nord-ouest de l'Afrique du Cambrien à la fin du Carbonifère (du Maroc au Libéria)

1991 ◽  
Vol 28 (7) ◽  
pp. 1121-1130 ◽  
Author(s):  
Michel Villeneuve ◽  
Jean-Jacques Cornée
Keyword(s):  
West African ◽  
The West ◽  
Lower Paleozoic ◽  
West African Craton ◽  
Middle Cambrian ◽  
Early Devonian ◽  
Middle Ordovician ◽  
The North ◽  
Marine Platform ◽  
General Regression

Paleogeographic reconstructions of Paleozoic time are presented for the northwest margin of the West-African Craton. An extensional regime and a marine transgression were dominant during the Early Cambrian. During the Middle Cambrian, the Rokélides orogen was responsible for the sea regression to the south, while the proto-Atlantic opening was active to the north of the Reguibat shield. A large stable marine platform was present during Early and Middle Ordovician. A general regression and the formation of the West-African Inlandsis took place during the Late Ordovician. During Silurian time, this sea transgressed over most of the African platform. Incipient Hercynian deformations during the Early Devonian produced horsts and grabens in Morocco. At the end of the Devonian and the beginning of the Carboniferous, the sea was restricted to isolated basins and tectonic trenches. Collision between West Africa and North America during the Late Carboniferous transformed the Lower Paleozoic margin into an Hercynian orogenic belt, whose structure is controlled by the presence of crustal blocks, generated as early as the Cambrian, and probably reflecting, in turn, older Panafrican zones of weakness. [Translated by the Journal]

The amalgamation of Pangea: Paleomagnetic and geological observations revisited

2020 ◽  
Author(s):  
Lei Wu ◽  
J. Brendan Murphy ◽  
Cecilio Quesada ◽  
Zheng-Xiang Li ◽  
John W.F. Waldron ◽  
...  
Keyword(s):  
Selection Criteria ◽  
Late Paleozoic ◽  
Geological Data ◽  
High Quality ◽  
Early Devonian ◽  
Polar Wander ◽  
Middle Ordovician ◽  
Oblique Convergence ◽  
Q Factors ◽  
European Variscides

The supercontinent Pangea formed by the subduction of the Iapetus and Rheic oceans between Gondwana, Laurentia, and Baltica during mid-to-late Paleozoic times. However, there remains much debate regarding how this amalgamation was achieved. Most paleogeographic models based on paleomagnetic data argue that the juxtaposition of Gondwana and Laurussia (Laurentia-Baltica) was achieved via long-lasting highly oblique convergence in the late Paleozoic. In contrast, many geology-based reconstructions suggest that the collision between the two continents was likely initiated via a Gondwanan promontory comprising the Iberian, Armorican, and Bohemian massifs, and parts of the basement units in the Alpine orogen during the Early Devonian. To help resolve this discrepancy, we present an updated compilation of high-quality paleopoles of mid-to-late Paleozoic ages (spanning Middle Ordovician and Carboniferous times) from Gondwana, Laurentia, and Baltica. These paleopoles were evaluated with the Van der Voo selection criteria, corrected for inclination error where necessary, and were used to revise their apparent polar wander (APW) paths. The revised APW paths were constructed using an innovative approach in which age errors, A95 ovals, and Q-factors of individual paleopoles are taken into account. By combining the resulting APW paths with existing geological data and field relationships in the European Variscides, we provide mid-to-late Paleozoic paleogeographic reconstructions which indicate that the formation of Pangea was likely initiated at 400 Ma via the collision between Laurussia and a ribbon-like Gondwanan promontory that was itself formed by a scissor-like opening of the Paleotethys Ocean, and that the amalgamation culminated in the mostly orthogonal convergence between Gondwana and Laurussia.

scholarly journals Muenstraia, ein neues Rugosa-Genus (Anthozoa) aus dem Obersilur und Unterdevon

Fossil Record ◽  
2001 ◽  
Vol 4 (1) ◽  
pp. 71-82 ◽  
Author(s):  
D. Weyer
Keyword(s):  
Type Species ◽  
New Genus ◽  
New Taxon ◽  
Early Devonian ◽  
Middle Ordovician ◽  
Traditional Definition ◽  
The Family ◽  
Definition Of

<i>Muenstraia</i> n. gen. ist eine der ältesten ahermatypischen Rugosa (Subordo Cyathaxoniina) und umfasst neben der Typusart <i>Muenstraia franconica</i> n. sp. (Ludlovium, Elbersreuther Orthoceratitenkalk, Frankenwald) drei weitere Arten: <i>Muenstraia squarrosa</i> (Sutherland, 1965) (unteres Ludlovium, Henryhouse-Formation, Oklahoma), <i>Muenstraia</i> sp. (oberes Lochkovium, Yukon-Gebiet), <i>Muenstraia thuringica</i> n. sp. (Pragium, Thüringisches Schiefergebirge und Tafilalt). Die Gattung kann von dem isolierten, nur aus Xinjiang bekannten Protozaphrentis Yü, 1957 des hohen Mittelordoviz abgeleitet werden; wichtige Deszendenten im Ludlovian sind <i>Laccophyllum</i> Simpson, 1900 und Sutherlandinia Weyer, 1972. <br><br> Der Bauplan entspricht dem seit Schindewolf (1931) traditionellen Konzept der Gattung <i>Petraia</i> Münster, 1839, die aber nach Revision (Weyer 2000) ihrer wahren Typusart <i>Petraia decussata</i> Münster, 1839 aus dem oberen Famennium einer anderen Entwicklungsreihe angehört (Neaxoninae Hill, 1981, jetzt Petraiidae Koninck, 1872). Für die dadurch namenlos gewordene Familia "Petraiidae" (etwa sensu Hill 1981) werden die bisher als Synonym ruhenden Protozaphrentidae Ivanovskiy, 1959 verfügbar, denen noch <i>Duncanella</i> Nicholson, 1874 sowie die Sutherlandiniinae Weyer, 1972 und die Ditoecholasmatinae Sutherland, 1965 zugeordnet sind. <br><br> Muenstraia, a new genus of Rugosa (Anthozoa) from the Late Silurian and Early Devonian <br><br> The new taxon, one of the most ancient members of the ahermatypic suborder Cyathaxoniina, includes the type species <i>Muenstraia franconica</i> n. sp. (Ludlovian, Elbersreuth <i>Orthoceratites</i>-Limestone Formation. Upper Franconia, Germany) and three further species: <i>Muenstraia squarrosa</i> (Sutherland, 1965) (lower Ludlovian, Henryhouse Formation, Oklahoma, USA), <i>Muenstraia</i> sp. (upper Lochkovian, Yukon Territories, Canada). <i>Muenstraia thuringica</i> n. sp. (middle/upper Pragian, Tentaculitid Limestone Formation, Thuringian Mountains, Germany, and middle Pragian, Tafilalt, Morocco). The genus descends from the isolated Upper Middle Ordovician <i>Protozaphrentis</i> Yü, 1957, only known from Xinjiang in China; it is the ancestor of two new phylogenetic lines starting in the Ludlovian with <i>Laccophyllum</i> Simpson, 1900, and <i>Sutherlandinia</i> Weyer, 1972. <br><br> Morphology and diagnosis are identical with the (since Schindewolf 1931) traditional definition of the genus <i>Petraia</i> Münster, 1839, which represents according to a revision of its real and Upper Famennian type species <i>Petraia</i> <i>decussata</i> Münster, 1839 (Weyer 2000) another phylogenetic line (Neaxoninae Hill, 1981, now Petraiidae Koninck, 1872). Therefore, the valid name of the family "Petraiidae" (sensu Hill 1981) becomes Protozaphrentidae Ivanovskiy, 1959, which comprise also <i>Duncanella</i> Nicholson, 1874, and both the Sutherlandiniinae Weyer, 1972 and Ditoecholasmatinae Sutherland, 1965. <br><br> doi:<a href="http://dx.doi.org/10.1002/mmng.20010040106" target="_blank">10.1002/mmng.20010040106</a>

scholarly journals Petroleum potential of sedimentary basins in Vietnam: long-term geoscientific co-operation with the Vietnam Petroleum Institute

2004 ◽  
Vol 4 ◽  
pp. 97-100 ◽  
Author(s):  
Lars Henrik Nielsen ◽  
Ioannis Abatzis
Keyword(s):  
Technology Transfer ◽  
Capacity Building ◽  
Sedimentary Basins ◽  
Research Capacity ◽  
Institutional Capacity ◽  
Basin Analysis ◽  
Hydrocarbon Potential ◽  
Petroleum Potential ◽  
Institutional Capacity Building

The Vietnam Petroleum Institute (VPI) and the Geological Survey of Denmark and Greenland (GEUS) have carried out a programme of geoscientific research and institutional capacity building since 1995. It has included geoscientific projects focused on assessment of the hydrocarbon potential of selected sedimentary basins, technology transfer and inhouse training at VPI in Hanoi and at GEUS in Copenhagen. Co-operation is continuing within the framework of a new, long-term project that aims to strengthen research capacity in Vietnam within the fields of basin analysis and modelling.

scholarly journals Geochronology and lithogeochemistry of granitoid rocks from the central part of the Central plutonic belt, New Brunswick, Canada: implications for Sn-W-Mo exploration

2016 ◽  
Vol 52 ◽  
pp. 125 ◽  
Author(s):  
Reginald A. Wilson ◽  
Sandra L. Kamo
Keyword(s):  
New Brunswick ◽  
Peraluminous Granite ◽  
Early Devonian ◽  
Middle Ordovician ◽  
Metasedimentary Rocks ◽  
Hydrothermal Processes ◽  
Average Abundance ◽  
Granitoid Rocks ◽  
Plutonic Belt ◽  
Plate Type

The central part of the Central plutonic belt in New Brunswick is underlain by numerous plutons of calc-alkaline, foliated and unfoliated granite that intrude Cambrian to Early Ordovician metasedimentary rocks. U-Pb (zircon) dating demonstrates that granites range in age from Middle Ordovician to Late Devonian, although most are late Silurian to Early Devonian. An age of 467 ± 7 Ma has been obtained on the foliated McKiel Lake Granite, whereas unfoliated intrusions yield ages of 423.2 ± 3.2 Ma (Bogan Brook Granodiorite), 420.7 +1.8/-2.0 Ma (Nashwaak Granite), 419.0 ± 0.5 Ma (Redstone Mountain Granite), 416.1 ± 0.5 Ma (Beadle Mountain Granite), 415.8 ± 0.3 Ma (Juniper Barren Granite), 409.7 ± 0.5 Ma (Lost Lake Granite), and 380.6 ± 0.3 Ma (Burnthill Granite). All plutons exhibit mixed arc-like and within-plate geochemical signatures, although the Redstone Mountain and Burnthill granites are dominantly of within-plate type. Trace element data reveal a close overall geochemical similarity between Ordovician and Silurian – Devonian plutons, indicating that all were generated by partial melting of the same crustal source. Late Silurian to Early Devonian plutons mainly comprise biotite and/or muscovite-bearing, peraluminous granite and are considered prospective for granophile-element mineralization. All plutons contain Sn well in excess of the granite global average abundance, and several contain average tin values comparable to productive stanniferous granites elsewhere. The Burnthill, Lost Lake, Beadle Mountain, and Nashwaak granites are geochemically most evolved and enriched in Sn and W. The Burnthill Granite in particular has experienced late-stage hydrothermal processes that have resulted in local enrichments of these elements.

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