Northern Houtman Sub-basin prospectivity—preliminary results

2016 ◽  
Vol 56 (2) ◽  
pp. 577
Author(s):  
Irina Borissova ◽  
Chris Southby ◽  
George Bernardel ◽  
Jennifer Totterdell ◽  
Robbie Morris ◽  
...  

In 2014–15 Geoscience Australia acquired 3,300 km of deep 2D seismic data over the northern part of the Houtman Sub-basin (Perth Basin). Prior to this survey, this area had a very sparse coverage of 2D seismic data with 50–70 km line spacing in the north and an industry grid with 20 km line spacing in the south. Initial interpretation of the available data has shown that the structural style, major sequences, and potential source rocks in this area are similar to those in the southern Houtman and Abrolhos sub-basins. The major difference between these depocentres, however, is in the volume and distribution of volcanic and intrusive igneous rocks. The northern part of the Houtman Sub-basin is adjacent to the Wallaby Plateau Large Igneous Province (LIP). The Wallaby Plateau and the Wallaby Saddle, which borders the western flank of the Houtman Sub-basin, had active volcanism from the Valanginian to at least the end of the Barremian. Volcanic successions significantly reduce the quality of seismic imaging at depth, making it difficult to ascertain the underlying thickness, geometry and structure of the sedimentary basin. The new 2D seismic dataset across the northern Houtman Sub-basin provides an opportunity for improved mapping of the structure and stratigraphy of the pre-breakup succession, assessment of petroleum prospectivity, and examination of the role of volcanism in the thermal history of this frontier basin.

1995 ◽  
Vol 35 (1) ◽  
pp. 358 ◽  
Author(s):  
R. Lovibond ◽  
R.J. Suttill ◽  
J.E. Skinner ◽  
A.N. Aburas

The Penola Trough is an elongate, Late Jurassic to Early Cretaceous, NW-SE trending half graben filled mainly with synrift sediments of the Crayfish Group. Katnook-1 discovered gas in the basal Eumeralla Formation, but all commercial discoveries have been within the Crayfish Group, particularly the Pretty Hill Formation. Recent improvements in seismic data quality, in conjunction with additional well control, have greatly improved the understanding of the stratigraphy, structure and hydrocarbon prospectivity of the trough. Strati-graphic units within the Pretty Hill Formation are now mappable seismically. The maturity of potential source rocks within these deeper units has been modelled, and the distribution and quality of potential reservoir sands at several levels within the Crayfish Group have been studied using both well and seismic data. Evaluation of the structural history of the trough, the risk of a late carbon dioxide charge to traps, the direct detection of gas using seismic AVO analysis, and the petrophysical ambiguities recorded in wells has resulted in new insights. An important new play has been recognised on the northern flank of the Penola Trough: a gas and oil charge from mature source rocks directly overlying basement into a quartzose sand sequence referred to informally as the Sawpit Sandstone. This play was successfully tested in early 1994 by Wynn-1 which flowed both oil and gas during testing from the Sawpit Sandstone. In mid 1994, Haselgrove-1 discovered commercial quantities of gas in a tilted Pretty Hill Formation fault block adjacent to the Katnook Field. These recent discoveries enhance the prospectivity of the Penola Trough and of the Early Cretaceous sequence in the wider Otway Basin where these sediments are within reach of the drill.


2018 ◽  
Vol 36 (5) ◽  
pp. 1229-1244
Author(s):  
Xiao-Rong Qu ◽  
Yan-Ming Zhu ◽  
Wu Li ◽  
Xin Tang ◽  
Han Zhang

The Huanghua Depression is located in the north-centre of Bohai Bay Basin, which is a rift basin developed in the Mesozoic over the basement of the Huabei Platform, China. Permo-Carboniferous source rocks were formed in the Huanghua Depression, which has experienced multiple complicated tectonic alterations with inhomogeneous uplift, deformation, buried depth and magma effect. As a result, the hydrocarbon generation evolution of Permo-Carboniferous source rocks was characterized by discontinuity and grading. On the basis of a detailed study on tectonic-burial history, the paper worked on the burial history, heating history and hydrocarbon generation history of Permo-Carboniferous source rocks in the Huanghua Depression combined with apatite fission track testing and fluid inclusion analyses using the EASY% Ro numerical simulation. The results revealed that their maturity evolved in stages with multiple hydrocarbon generations. In this paper, we clarified the tectonic episode, the strength of hydrocarbon generation and the time–spatial distribution of hydrocarbon regeneration. Finally, an important conclusion was made that the hydrocarbon regeneration of Permo-Carboniferous source rocks occurred in the Late Cenozoic and the subordinate depressions were brought forward as advantage zones for the depth exploration of Permo-Carboniferous oil and gas in the middle-northern part of the Huanghua Depression, Bohai Bay Basin, China.


2020 ◽  
pp. 7-32
Author(s):  
Katarzyna Kulczyńska ◽  
Natalia Borowicz ◽  
Karolina Piwnicka-Wdowikowska

Morasko University Campus in Poznań – origin, spatial and functional structure, transport solutions The purpose of the paper is to characterize the most recently created part of the Adam Mickiewicz University – the Morasko Campus. The paper consists of three parts. The first concerns the origins and development of the campus. The second part presents its spatial and functional structure on the basis of a field inventory, while the third one – campus transport solutions based on a survey conducted among students. The history of the campus located in the northern, peripheral part of the city began with laying the foundation act and the cornerstone in 1977. The agricultural role of this area, dominant until the 1980s, has been replaced with new functions, mainly academic and scientific ones. The first university buildings were commissioned in the 1990s, and the construction boom began after 2000. A total of nine faculties (out of 21 existing) are housed in eight buildings in the campus, including exact and natural sciences, as well as a part of social sciences and humanities. To this day, neither student dormitories nor accommodation for PhD students have been constructed (although they are likely to be built), which would emphasize the academic function of the campus. The campus also comprises areas with recreational, sports, residential and other service functions (e.g. catering, beauty, hairdressing, and commercial services), which are complemented by areas that serve transport functions. Location in the northern periphery of the city, and above all the railway line for freight (the northern bypass of Poznań) separating the city from the campus, makes transport to this part of the city limited. The results of the survey revealed a lack of a safe bicycle path between the western and eastern part of the campus, insufficient number of parking places for motorists, a lack of paved roads from the north and west, only three narrow access roads for car commuters, and difficult access by public transport to the eastern and north-eastern parts. In the latter case, the planned extension of the tram line towards Umultowo after the year 2022 is expected to solve the problem. Zarys treści: Celem opracowania jest charakterystyka najmłodszej przestrzeni Uniwersytetu im. Adama Mickiewicza – Kampusu Morasko. Opracowanie składa się z trzech zasadniczych części. Pierwsza część artykułu dotyczy genezy powstania i rozbudowy miasteczka uniwersyteckiego. W drugiej części przedstawiono strukturę przestrzenno-funkcjonalną kampusu w oparciu o inwentaryzację terenową, w trzeciej zaś obsługę transportową na podstawie badań ankietowych przeprowadzonych wśród studentów. Historia położonego w północnej, peryferyjnej części miasta kampusu rozpoczęła się od wmurowania aktu erekcyjnego i kamienia węgielnego w 1977 r. Dominująca do lat 80. XX w. funkcja rolnicza tego obszaru została zastąpiona przez nowe funkcje, głównie akademickie i naukowe. Pierwsze budynki dydaktyczne oddano do użytku dopiero w latach 90. ubiegłego wieku, a boom budowlany rozpoczął się po roku 2000. Swoją siedzibę znalazły tutaj nauki ścisłe i przyrodnicze, a także część nauk społecznych i humanistycznych, w sumie dziewięć wydziałów (na 21 istniejących) w ośmiu budynkach. Do dzisiaj nie wybudowano akademików czy domu doktoranta (choć istnieją realne szanse na ich powstanie), co podkreśliłoby funkcję akademicką kampusu. W strukturze kampusu wyróżnia się ponadto obszary o funkcjach rekreacyjnych, rekreacyjno-sportowych, mieszkaniowych i innych o charakterze usługowym (np. usługi gastronomiczne, kosmetyczne, fryzjerskie, handel), których uzupełnieniem są obszary o funkcjach komunikacyjnych. Położenie na północnych peryferiach miasta, a przede wszystkim linia kolejowa dla przewozów towarowych (północna obwodnica Poznania) oddzielająca miasto od kampusu sprawiają, że obsługa transportowa tej części miasta jest ograniczona. Wyniki badań ankietowych wskazują na brak bezpiecznej drogi rowerowej między zachodnią i północno-wschodnią częścią kampusu, niewystarczającą liczbę miejsc parkingowych dla zmotoryzowanych, brak utwardzonych dróg od strony północnej i zachodniej, zaledwie trzy wąskie wjazdy na kampus dla dojeżdżających samochodem czy utrudniony dojazd komunikacją publiczną do części wschodniej i północno-wschodniej. W tym ostatnim przypadku rozwiązaniem ma być planowana po 2022 r. rozbudowa linii tramwajowej w kierunku Umultowa.


2009 ◽  
Vol 46 (3) ◽  
pp. 155-167 ◽  
Author(s):  
Steven W. Denyszyn ◽  
Don W. Davis ◽  
Henry C. Halls

The north–south-trending Clarence Head dyke swarm, located on Devon and Ellesmere Islands in the Canadian High Arctic, has a trend orthogonal to that of the Neoproterozoic Franklin swarm that surrounds it. The Clarence Head dykes are dated by the U–Pb method on baddeleyite to between 716 ± 1 and 713 ± 1 Ma, ages apparently younger than, but within the published age range of, the Franklin dykes. Alpha recoil in baddeleyite is considered as a possible explanation for the difference in ages, but a comparison of the U–Pb ages of grains of equal size from both swarms suggests that recoil distances in baddeleyite are lower than those in zircon and that the Clarence Head dykes are indeed a distinctly younger event within the period of Franklin magmatism. The Clarence Head dykes represent a large swarm tangential to, and cogenetic with, a giant radiating dyke swarm ∼800 km from the indicated source. The preferred mechanism for the emplacement of the Clarence Head dykes is the exploitation of concentric zones of extension around a depleting and collapsing plume source. While the paleomagnetism of most Clarence Head dykes agrees with that of the Franklin dykes, two dykes have anomalous remanence directions, interpreted to be a chemical remanent magnetization carried by pyrrhotite. The pyrrhotite was likely deposited from fluids mobilized southward from the Devonian Ellesmerian Orogeny to the north that used the interiors of the dykes as conduits and precipitated pyrrhotite en route.


Author(s):  
Damini Saini ◽  
Sunita Singh Sengupta

Almost every management institution in India has an ethics course in their curriculum that is focused upon inculcating the value set in an individual. To understand the role of ethical education in accelerating the quality of management education, this chapter provides a discussion of implications of the questions of quality, dilemma, and pedagogy of ethical training. In the introduction, the authors emphasize on the reasons of focusing upon the ethical education, then give a brief history of ethics education in Indian management institutions. In order to show the significance, authors also show the place of ethics course in top 10 business institutions in India. Further, the authors describe the main focus of the chapter that is the contribution of ethics in management education.


Author(s):  
Karen Radner ◽  
Nadine Moeller ◽  
D. T. Potts

With the emphasis of the Oxford History of the Ancient Near East firmly placed on the political, social, and cultural histories of the states and communities shaping Egypt and Western Asia (including the Levant, Anatolia, Mesopotamia, and Iran), this introduction to the five-volume series seeks to place the region in its environmental context. It discusses the lay of the land between the North African coast and the Hindu Kush, including the role of tectonics and geomorphology. It also considers some key issues regarding climatic conditions, focusing in particular on the significance of the Inter-Tropical Convergence Zone and the potential impact of megadroughts and pandemics.


Lithos ◽  
2021 ◽  
Vol 380-381 ◽  
pp. 105902
Author(s):  
Linghan Liu ◽  
Zhaochong Zhang ◽  
Zhiguo Cheng ◽  
M. Santosh ◽  
Bingxiang Liu ◽  
...  

2009 ◽  
Vol 146 (3) ◽  
pp. 305-308 ◽  
Author(s):  
DOUGAL A. JERRAM ◽  
KATHRYN M. GOODENOUGH ◽  
VALENTIN R. TROLL

The study of volcanic rocks and igneous centres has long been a classic part of geological research. Despite the lack of active volcanism, the British Isles have been a key centre for the study of igneous rocks ever since ancient lava flows and excavated igneous centres were recognized there in the 18th century (Hutton, 1788). This led to some of the earliest detailed studies of petrology. The starting point for many of these studies was the British Palaeogene Igneous Province (BPIP; formerly known as the ‘British Tertiary’ (Judd, 1889), and still recognized by this name by many geologists around the globe). This collection of lavas, volcanic centres and sill/dyke swarms covers much of the west of Scotland and the Antrim plateau of Northern Ireland, and together with similar rocks in the Faroe Islands, Iceland and Greenland forms a world-class Large Igneous Province. This North Atlantic Igneous Province (NAIP) began to form through continental rifting above a mantle plume at c. 60 Ma, and subsequently evolved as North America separated from Europe, creating the North Atlantic Ocean.


2004 ◽  
Vol 44 (1) ◽  
pp. 241 ◽  
Author(s):  
A.M. Lockwood ◽  
C. D’Ercole

The basement topography of the Gascoyne Platform and adjoining areas in the Southern Carnarvon Basin was investigated using satellite gravity and seismic data, assisted by a depth to crystalline basement map derived from modelling the isostatic residual gravity anomaly. The resulting enhanced view of the basement topography reveals that the Gascoyne Platform extends further westward than previously indicated, and is bounded by a northerly trending ridge of shallow basement, named the Bernier Ridge.The Bernier Ridge is a product of rift-flank uplift prior to the Valanginian breakup of Gondwana, and lies east of a series of small Mesozoic syn-rift sedimentary basins. Extensive magmatic underplating of the continental margin associated with this event, and a large igneous province is inferred west of the ridge from potential field and seismic data. Significant tectonic events that contributed to the present form of the Bernier Ridge include the creation of the basement material during the Proterozoic assembly of Rodinia, large-scale faulting during the ?Cambrian, uplift and associated glaciation during the early Carboniferous, and rifting of Gondwana during the Late Jurassic. The depositional history and maturity of the Gascoyne Platform and Bernier Ridge show that these terrains have been structurally elevated since the mid-Carboniferous.No wells have been drilled on the Bernier Ridge. The main source rocks within the sedimentary basins west of the Bernier Ridge are probably Jurassic, similar to those in the better-known Abrolhos–Houtman and Exmouth Sub-basins, where they are mostly early mature to mature and within the oil window respectively. Within the Bernier Ridge area, prospective plays for petroleum exploration in the Jurassic succession include truncation at the breakup unconformity sealed by post-breakup shale, and tilted fault blocks sealed by intraformational shale. Plays in the post-breakup succession include stratigraphic traps and minor rollover structures.


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