Deadlines
02 Oct

ACE 2015 Call for Papers Expires in 1 day

Bulletin Article

3553
 

Select lacustrine and marine depositional settings show a spectrum of styles of carbonate deposition and illustrate the types of carbonates, with an emphasis on microbialites and tufa, to be expected in early rift settings. Early rift lake examples examined in this review article are all from East Africa: Lakes Turkana, Bogoria, Natron and Magadi, Manyara, and Tanganyika. Other lake examples include four from the western United States (Great Salt Lake and high lake level Lake Bonneville, Mono Lake and high lake level Russell Lake, Pyramid Lake and high lake level Lake Lahontan, and Searles Lake) and two from Australia (Lakes Clifton and Thetis). Marine basin examples are the Hamelin Pool part of Shark Bay from Australia (marginal marine) and the Red Sea (marine rift).

Landsat images and digital elevation models for each example are used to delineate present and past lake-basin margins based on published lake-level elevations, and for some examples, the shorelines representing different lake levels can be compared to evaluate how changes in size, shape, and lake configuration might have impacted carbonate development. The early rift lakes show a range of characteristics to be expected in lacustrine settings during the earliest stages of continental extension and rifting, whereas the Red Sea shows well advanced rifting with marine incursion and reef–skeletal sand development. Collectively, the lacustrine examples show a wide range of sizes, with several of them being large enough that they could produce carbonate deposits of potential economic interest. Three of the areas—Great Salt Lake and high lake level Lake Bonneville, Pyramid Lake and high lake level Lake Lahontan, and the Red Sea—are exceedingly complex in that they illustrate a large degree of potential depositional facies heterogeneity because of their size, irregular pattern, and connectivity of subbasins within the overall basin outline.

Explorer Article

3166
 
Explorer Article

Discoveries were comparatively sparse, but they persisted steadily throughout the year. Here are some of the more significant discoveries of the past year.

3165
 
Explorer Article

A review of major oil and gas discoveries of 2013 shows a down year in terms of quantity—but that’s not the whole story.

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Explorer Emphasis

11288
 
Explorer Emphasis Article
“These days, shows like The Big Bang Theory seem to pass for science content.” That’s Scott Sampson, one of this year’s AAPG Geosciences in the Media Award winners.
2180
 
Explorer Emphasis Article

Seemingly endless images and slogans, from both industry supporters and critics, remind us almost daily that the public conversation about energy these days is about the future.

2742
 

The impact of the rapid economic growth of “Asian giants” China and India is such that African oil supplies now face increased demand to fuel this growth and, therefore, increased E&P activity.

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