OFFSHORE EXPLORATION OF THE SOUTHERN CARNARVON BASIN

1970 ◽  
Vol 10 (1) ◽  
pp. 9
Author(s):  
J. K. Geary
Keyword(s):  
Hydrocarbon Potential ◽  
Geological Exploration ◽  
Lower Carboniferous ◽  
Seismic Surveys ◽  
The North ◽  
Closed Structure ◽  
Upper Silurian ◽  
The Town ◽  
Western Australian ◽  
Carnarvon Basin

A four-year offshore geophysical and geological exploration programme over the Southern Carnarvon Basin, which culminated in the recent drilling of Pendock ID No. 1, has filled a major gap in the geological knowledge of the Western Australian continental shelf.From aeromagnetic and seismic surveys, two north-south trending basins are now recognized with probable thickness of sediments of up to 20,000 ft. These are referred to as the North Gascoyne and South Gascoyne Basins and are separated by a large shallow basement platform rising west of the town of Carnarvon.In the North Gascoyne Basin, seismic mapping indicates two prominent north-easterly structural trends which may be offshore extensions of anticlinal features seen onshore. Pendock ID No. 1, which tested a closed structure along the western trend, was the first offshore well drilled in the Southern Carnarvon Basin.The well, after penetrating a normal Tertiary and Cretaceous section, passed through a major unconformity and entered Lower Carboniferous dolomite. The thick Jurassic, Triassic and Permian sequences occurring onshore were missing, probably due to a combination of truncation and non-deposition. Subsequently, the well penetrated over 2400 ft. of Devonian sediments which included over 1000 ft. of reef complex. This is the first recognized occurrence of Devonian reef in the (arnarson Basin. Total depth was reached at 8205 ft. in Upper Silurian dolomite. Virtually all of the section penetrated was marine. Minor shows of hydrocarbons were encountered in the Paleozoic.The drilling at Pendock has established attractive new exploration objectives and has enhanced the Paleozoic hydrocarbon potential over much of the Carnarvon Basin, both onshore and offshore.

THE HYDROCARBON POTENTIAL OF EXPLORATION PERMITS WA-299-P AND WA-300-P, CARNARVON BASIN: A CASE STUDY

2003 ◽  
Vol 43 (1) ◽  
pp. 339 ◽  
Author(s):  
M. Partington ◽  
K. Aurisch ◽  
W. Clark ◽  
I. Newlands ◽  
S. Phelps ◽  
...  
Keyword(s):  
Late Cretaceous ◽  
Hydrocarbon Potential ◽  
North West ◽  
The North ◽  
Alluvial Channel ◽  
Main Fault ◽  
Early Palaeozoic ◽  
Eastern Edge ◽  
Carnarvon Basin

Exploration permits WA-299-P and WA-300-P lie west of the North West Cape in a frontier part of the Carnarvon Basin where the largely Mesozoic Exmouth Sub-basin abuts against shallow Palaeozoic strata of the Gascoyne Platform. The only exploration well, within the permits, Pendock–1, penetrated a thin Valanginian Birdrong Sandstone unconformably overlying Carboniferous to Silurian units, so the Mesozoic hydrocarbon potential of the area is effectively untested.The structure of the area comprises a complex mosaic of NNE–SSW trending Early Palaeozoic extensional, listric growth faults, dissected by NW–SE trending Permian extension relay zones. Subsequent phases of Callovian– Oxfordian and Valanginian uplift, together with Late Cretaceous and Miocene inversion along the main fault zone, further complicate the structure. Several seismic events, some of which correlate with magnetic anomalies, are discordant with the local stratigraphy indicating a probable igneous origin.The primary targets are the Birdrong Sandstone and underlying Wogatti Formation, both of which host onshore oil accumulations at Rough Range and Parrot Hill–1. The retrogradational clastic shoreline facies of the Birdrong Sandstone is well known along the eastern edge of the Dampier–Barrow–Exmouth Sub-basins. The Wogatti Formation was deposited as a more restricted alluvial/ fluvial sheet sand facies, so far identified only in the onshore Cape Range area. Where the Jurassic is preserved, fluvial/alluvial channel sand facies of the Middle Jurassic Learmonth Formation, known onshore at Sandy Point–1, and Callovian nearshore sands, as observed in Unknown Hill–l, are expected to be important secondary targets.The most promising play types within the Southern Carnarvon Basin are dip and fault-dip closures at Birdrong/Wogatti level associated with Late Cretaceous reactivation of the main NE–SW listric faults, and accentuated by later Miocene compression. The most significant exploration risks are charge and the high risk of biodegradation of reservoired liquid hydrocarbons (critically linked to reservoir temperature).

On Riccia marginata and related species (Ricciaceae, Marchantiophyta)

2012 ◽  
Vol 46 ◽  
pp. 298-305 ◽  
Author(s):  
A. D. Potemkin ◽  
T. Ahti
Keyword(s):  
Related Species ◽  
Lake Ladoga ◽  
Leningrad Region ◽  
Sem Images ◽  
North Shore ◽  
The North ◽  
Molecular Studies ◽  
The Future ◽  
The Town

Riccia marginata Lindb. was described by S. O. Lindberg (1877) from the outskirts of the town of Sortavala near the north shore of Lake Ladoga, Republic of Karelia, Russia. The species has been forgotten in most recent liverwort accounts of Europe, including Russia. Lectotypification of R. marginata is provided. R. marginata shares most characters with R. beyrichiana Hampe ex Lehm. It differs from “typical” plants of R. beyrichiana in having smaller spores, with ± distinctly finely areolate to roughly papillose proximal surfaces and a narrower and shorter thallus, as well as in scarcity or absence of marginal hairs. It may represent continental populations of the suboceanic-submediterranean R. beyrichiana, known in Russia from the Leningrad Region and Karelia only. The variability of spore surfaces in R. beyrichiana is discussed and illustrated by SEM images. A comparison with the spores of R. bifurca Hoffm. is provided. The question how distinct R. marginata is from R. beyrichiana needs to be clarified by molecular studies in the future, when adequate material is available. R. marginata is for the time being, provisionally, included in R. beyrichiana.

ANTHROPOGENIC AND ECONOMIC FACTORS OF THE СRIMEAN ECOLOGY

2020 ◽  
pp. 5-14
Author(s):  
N.P. Demchenko ◽  
N.Yu. Polyakova
Keyword(s):  
Business Owners ◽  
Crimean Peninsula ◽  
The North ◽  
Chemical Release ◽  
The Crimea ◽  
Russian Plant ◽  
The Republic ◽  
The Town ◽  
Integrated Indicators ◽  
The Crimean Peninsula

The situation in the ecology of the Crimean Peninsula in recent years was discussed in the article. The analysis of absolute and integrated indicators of the anthropogenic impact showed that the ecological situation remains difficult, and according to some indicators even continues to deteriorate. In summer 2018, the situation had worsened because of the large chemical release of titanium dioxide on the north of the Crimea from the holding pond of a large Russian plant that is situated near the town of Armyansk. This, in turn, led to the contamination of the large territory on the north of the peninsula. This fact indicates insufficient control by officials of the Republic of Crimea over the implementation of the RF laws for environmental protection by business owners of various forms of ownership, especially private ownership, the level of responsibility for the environment of which is very low.

Time-lapse seismic surveys in the North Sea and their business impact

2000 ◽  
Vol 19 (3) ◽  
pp. 286-293 ◽  
Author(s):  
Klaas Koster ◽  
Pieter Gabriels ◽  
Matthias Hartung ◽  
John Verbeek ◽  
Geurt Deinum ◽  
...  
Keyword(s):  
North Sea ◽  
Time Lapse ◽  
Seismic Surveys ◽  
Business Impact ◽  
The North ◽  
The North Sea

Inbreeding, Migration and Age at Marriage in Rural Toledo, Spain

1983 ◽  
Vol 15 (1) ◽  
pp. 47-57 ◽  
Author(s):  
R. Calderon
Keyword(s):  
Economic Life ◽  
Neolithic Period ◽  
Ciudad Real ◽  
Age At Marriage ◽  
The North ◽  
Natural Region ◽  
South West ◽  
Different Origins ◽  
The Town ◽  
Common Plant

The natural region of the Jara, with an area of 2500 km2 occupies much of the south west of the province of Toledo, and extends into the provinces of Caceres and Ciudad Real. It is situated between the Tajo and Guadiana rivers, south of the town of Talavera de la Reina, the centre of the economic life in this region. Its highlands are covered with xerophytic vegetation, of which the most common plant is the jara (Cistus ladaniferus), from which this zone takes it name, (Fig. 1). It has been occupied from the neolithic period onwards by peoples of different origins, e.g. Romans, Muslims, Jews, Mozarabs (Jimenez de Gregorio, 1959) but the present population derives from settlement from the north of the Tajo river beginning in the 14th century following the upheavals of the Moslem–Christian wars.

A Carved Stone from D'Arcy, Saskatchewan

1940 ◽  
Vol 5 (4) ◽  
pp. 334-335
Author(s):  
Vladimar Alfred Vigfusson
Keyword(s):  
North America ◽  
Late Pleistocene ◽  
Glacial Lake ◽  
Bering Strait ◽  
The North ◽  
Gravel Pit ◽  
North Bank ◽  
The Town

In recent years, the attention of some archaeologists has been directed to the Canadian Northwest with the expectation of finding some evidence or indication of the early migrations of man on this continent. That man reached North America by Bering Strait from Asia, is generally accepted, but the theory that the migrations took place in late Pleistocene times and by way of an open corridor between the Keewatin ice and the Rockies, requires confirmation. It is significant that Folsom and Yuma points from Saskatchewan, described by E. B. Howard, were found mainly in areas bordering the ancient glacial Lake Regina.As a further contribution to this problem, it seems desirable to present a brief description of a carved stone relic found in gravel in central Saskatchewan about three years ago.The stone was found about seven miles southeast of the town of D'Arcy in a gravel pit located on Sec. 9, Tp. 28, Rge. 18, W. 3rd Meridian, on the north bank of a ravine running east into Bad Lake.

The Social Structure of Modern Bamako

Africa ◽  
1965 ◽  
Vol 35 (2) ◽  
pp. 125-142 ◽  
Author(s):  
Claude Meillassoux
Keyword(s):  
Social Structure ◽  
The North ◽  
The Social ◽  
North Bank ◽  
Niger River ◽  
Opening Paragraph ◽  
The Town

Opening ParagraphAccording to a partial census taken in 1960, Bamako city has about 130,000 inhabitants. Small by Western standards, it is still by far the largest city in Mali. At the time of the French conquest Bamako had only between 800 and 1,000 inhabitants; it was the capital of a Bambara chiefdom, grouping about thirty villages on the north bank of the Niger river, with a total of about 5,000 people. The ruling dynasty was that of the Niaré, who, according to their traditions, came from the Kingi eleven generations ago (between 1640 and 1700). For defence against the neighbours and armed slave-raiders fortifications were built around the town and a permanent army of so-fa (horsemen) was raised. Soon after its foundation Bamako attracted Moslem Moors from Twat who settled as marabouts and merchants under the protection of the Niaré's warriors. Among them, the Twati (later to be called Touré) and the Dravé became, alongside and sometimes in competition with the Niaré, the leading families.

scholarly journals II.—On Solenopora garwoodi, sp. nov., from the Lower Carboniferous in the North-West of England

1913 ◽  
Vol 10 (7) ◽  
pp. 289-292 ◽  
Author(s):  
George J. Hinde
Keyword(s):  
North America ◽  
Calcareous Algae ◽  
Lower Carboniferous ◽  
North West ◽  
The North ◽  
Jurassic Rocks

Some years since Professor E. J. Garwood sent to me for examination some pieces of limestone from the Lower Carboniferous rocks in the Shap and Ravenstonedale districts of Westmorland, in which he had observed the rounded outlines of fossils with a structure which appeared to him to resemble that of Stromatopora. The rock in which the fossils were embedded was so compact and hard that they could not be extracted, and it was necessary to make sections in various directions in order to ascertain their structure, which proved to be identical with that of Solenopora, now well known as one of the calcareous Algæ. It is many years ago since this genus was recognized in the Ordovician rocks in North America, Britain, and Eussia; more recently it was found in the Silurian rocks of the Isle of Gotland, and in 1894 a species was described from the Jurassic rocks of Gloucestershire and Yorkshire. But until this fortunate discovery of its occurrence in the Lower Carboniferous by Professor Garwood, no example of the genus was known in any of the rocks between the Silurian and the Jurassic.

A Bastion of the Town Wall of London, and the Sepulchral Monument of the Procurator Julius Classicianus

1936 ◽  
Vol 16 (1) ◽  
pp. 1-7
Author(s):  
F. Cottrill
Keyword(s):  
Retaining Wall ◽  
Passenger Transport ◽  
East Side ◽  
The North ◽  
Inner Circle ◽  
External Face ◽  
The Town ◽  
Made In

Excavations made in June 1935 for the foundations of a new sub-station of the London Passenger Transport Board at Trinity Place, Trinity Square, E.C., brought to light some remains of the Roman town wall of London. A large portion of the medieval superstructure is still standing on the east side of Trinity Place, and to the north of this the Inner Circle Railway runs in a cutting under the roadway. The construction of this cutting involved the removal of a length of 73 ft. of the wall in 1882 (R.C.H.M. Roman London, 83). The site of the discoveries to be described here was immediately behind the southern retaining wall of the cutting. Both faces of the Roman wall were exposed at this point, and could be examined in detail, and against the external face was a fragment of one of the later Roman bastions (pl. 1). These remains were investigated by the writer on behalf of this Society, and the Passenger Transport Board kindly granted all necessary facilities, and rendered every possible assistance.

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