Seismic geohistory analysis—A case history from the Canning Basin, Western Australia

Geophysics ◽  
1984 ◽  
Vol 49 (4) ◽  
pp. 333-343 ◽  
Author(s):  
M. F. Middleton
Keyword(s):  
Western Australia ◽  
Case History ◽  
Fault System ◽  
Seismic Section ◽  
Canning Basin ◽  
Geologic Time ◽  
The Past ◽  
Middle Carboniferous ◽  
Thermal Oil

Seismic geohistory analysis is a method of reconstructing an interpreted seismic section, assuming generalized porosity‐traveltime and depth‐traveltime relations. The method can indicate timing of fault movements, juxtaposition of units across faults in the past, and depth or traveltime to specific reflection horizons throughout geologic time. The method applied to the Lennard shelf of the Canning Basin shows that the major movements of the Pinnacle fault system occurred during the Ordovician and Middle Carboniferous. The movements reflect subsidence of the Fitzroy trough, which is basinward of the Lennard shelf. The analysis also shows a prograding sediment wedge on the margin of the Lennard shelf to have had temperatures in the range 110°–116°C since Permian times. Being within the thermal oil window for the past 280 Ma, the sediment wedge may be a good hydrocarbon prospect.

The Geologic Time Spiral - A Path to the Past

10.3133/gip58 ◽  
2008 ◽  
Author(s):  
Joseph Graham ◽  
William Newman ◽  
John Stacy
Keyword(s):  
Geologic Time ◽  
The Past

CPT-based liquefaction case histories compiled from three earthquakes in Canterbury, New Zealand

2021 ◽  
pp. 875529302199636
Author(s):  
Mertcan Geyin ◽  
Brett W Maurer ◽  
Brendon A Bradley ◽  
Russell A Green ◽  
Sjoerd van Ballegooy
Keyword(s):  
New Zealand ◽  
Case History ◽  
Prediction Models ◽  
Free Field ◽  
Case Histories ◽  
Cone Penetration ◽  
History Data ◽  
The Past ◽  
Surface Manifestation ◽  
The Many

Earthquakes occurring over the past decade in the Canterbury region of New Zealand have resulted in liquefaction case-history data of unprecedented quantity. This provides the profession with a unique opportunity to advance the prediction of liquefaction occurrence and consequences. Toward that end, this article presents a curated dataset containing ∼15,000 cone-penetration-test-based liquefaction case histories compiled from three earthquakes in Canterbury. The compiled, post-processed data are presented in a dense array structure, allowing researchers to easily access and analyze a wealth of information pertinent to free-field liquefaction response (i.e. triggering and surface manifestation). Research opportunities using these data include, but are not limited to, the training or testing of new and existing liquefaction-prediction models. The many methods used to obtain and process the case-history data are detailed herein, as is the structure of the compiled digital file. Finally, recommendations for analyzing the data are outlined, including nuances and limitations that users should carefully consider.

scholarly journals Our New Cathedrals: Spirituality and Old-Growth Forests in Western Australia

2006 ◽  
Vol 3 (1) ◽  
Author(s):  
David Worth
Keyword(s):  
Social Movements ◽  
Western Australia ◽  
The State ◽  
The South ◽  
Old Growth ◽  
The Past ◽  
South West ◽  
Old Growth Forests ◽  
Heated Debate ◽  
Policy Proposals

Over the past 30 years in Western Australia (WA), there has been heated debate about the future use of the remaining karri and jarrah forests in the south-west of the State. This debate revolves around policy proposals from two social movements: one wants to preserve as much of the remaining old-growth forests as possible, and an opposing movement supports a continued

Did Ground Cover Change Over Geologic Time?

2000 ◽  
Vol 6 ◽  
pp. 171-182 ◽  
Author(s):  
Ben A. LePage ◽  
Hermann W. Pfefferkorn
Keyword(s):  
Fossil Record ◽  
Ground Cover ◽  
The Other ◽  
Detailed Account ◽  
Geologic Time ◽  
The Past ◽  
Other Hand ◽  
Plant Fossil

When one hears the term “ground cover,” one immediately thinks of “grasses.” This perception is so deep-seated that paleobotanists even have been overheard to proclaim that “there was no ground cover before grasses.” Today grasses are so predominant in many environments that this perception is perpetuated easily. On the other hand, it is difficult to imagine the absence or lack of ground cover prior to the mid-Tertiary. We tested the hypothesis that different forms of ground cover existed in the past against examples from the Recent and the fossil record (Table 1). The Recent data were obtained from a large number of sources including those in the ecological, horticultural, and microbiological literature. Other data were derived from our knowledge of Precambrian life, sedimentology and paleosols, and the plant fossil record, especially in situ floras and fossil “monocultures.” Some of the data are original observations, but many others are from the literature. A detailed account of these results will be presented elsewhere (Pfefferkorn and LePage, in preparation).

The ecology of a graveyard

1975 ◽  
Vol 23 (5) ◽  
pp. 803 ◽  
Author(s):  
WA Loneragan
Keyword(s):  
Western Australia ◽  
Information Analysis ◽  
Ecological Conditions ◽  
The Past ◽  
Characteristic Species ◽  
Severe Disturbance

The present-day vegetation of a cemetery at Gingin, Western Australia, is described by means of normal and inverse information analysis. In spite of severe disturbance during the past 10 years through annual burning and slashing, a well-defined floristic pattern is identifiable, even in the absence from the analysis of the two most characteristic species, Anigozanthos manglesii and A. humilis. It is suggested that whereas, in the past, parts of the cemetery were ecologically distinct and characterized by different groups of species, regular disturbance is altering these ecological conditions and causing changes in the distribution and behaviour of the species present. This changing ecology appears to be most sensitively demonstrated by the behaviour of A. manglesii and A. humilis.

Compositional Kinetics – Ordovician Goldwyer and Bongabinni formations, Canning Basin, Western Australia: Data Release

2021 ◽  
Author(s):  
B. Horsfield ◽  
C.J. Boreham ◽  
D.S. Edwards ◽  
R. di Primio ◽  
V. Tiem
Keyword(s):  
Western Australia ◽  
Canning Basin ◽  
Data Release

Petrophysical and geochemical interpretations of well logs from the pre-Carboniferous succession in Barnicarndy 1, Canning Basin, Western Australia

2021 ◽  
Vol 61 (1) ◽  
pp. 253
Author(s):  
Liuqi Wang ◽  
Dianne S. Edwards ◽  
Adam Bailey ◽  
Lidena K. Carr ◽  
Chris J. Boreham ◽  
...  
Keyword(s):  
Western Australia ◽  
Well Logs ◽  
Canning Basin
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