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2604
 
Explorer Emphasis Article

Long captivated by both the onshore and offshore possibilities in Colombia, operators are hoping to turn Caribbean potential into reality soon.

3705
 

The central Black Sea Basin of Turkey is filled by more than 9 km (6 mi) of Upper Triassic to Holocene sedimentary and volcanic rocks. The basin has a complex history, having evolved from a rift basin to an arc basin and finally having become a retroarc foreland basin. The Upper Triassic–Lower Jurassic Akgol and Lower Cretaceous Cağlayan Formations have a poor to good hydrocarbon source rock potential, and the middle Eocene Kusuri Formation has a limited hydrocarbon source rock potential. The basin has oil and gas seeps. Many large structures associated with extensional and compressional tectonics, which could be traps for hydrocarbon accumulations, exist.

Fifteen onshore and three offshore exploration wells were drilled in the central Black Sea Basin, but none of them had commercial quantities of hydrocarbons. The assessment of these drilling results suggests that many wells were drilled near the Ekinveren, Erikli, and Ballıfakı thrusts, where structures are complex and oil and gas seeps are common. Many wells were not drilled deep enough to test the potential carbonate and clastic reservoirs of the İnaltı and Cağlayan Formations because these intervals are locally buried by as much as 5 km (3 mi) of sedimentary and volcanic rocks. No wells have tested prospective structures in the north and east where the prospective İnalti and Cağlayan Formations are not as deeply buried. Untested hydrocarbons may exist in this area.

2278
 
Explorer Historical Highlight

When New York began its first state geological survey in 1836, seep petroleum was used in small quantities primarily for medicinal purposes.

2108
 
Explorer Historical Highlight

In January 1860, Lawrence, Kan., newspaperman George W. Brown, while visiting his hometown of Conneautville, Pa., was captured in the excitement of a new oil boom radiating from nearby Titusville.

2449
 

Containing costs and reducing risks are good basics for any project, but for smaller exploration companies – like many in the U.S. mid-continent region – they can be go-or-no factors.

2407
 
Explorer Article

The Marcellus Shale is a hot topic in the gas industry these days. Many have hopes that the gas found will assist in our energy needs until a better solution can be found.

2409
 
Explorer Article

An AAPG member believes the New York village of Fredonia should be recognized as the birthplace of the natural gas industry.

2354
 

At first glance the structural contour map and the cross section shown here look as if they had been published in the late 1920s by AAPG in the “Structure of Typical American Oil Fields” memoir.

2928
 

The circum-Arctic region has ample energy potential, but innovative technology is essential for future exploration. One research geologist explains the need for combining tried and true geology basics with new, creative methods to get the best results.

2920
 
Explorer Emphasis Article

High-flying LiDAR technology continues to make important contributions to geological study.

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