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Latest Geological Society Stories

Giant Kraken Lair Found In Nevada
2011-10-10 11:17:59

Mount Holyoke College paleontologist Mark McMenamin said on Monday a dig-site at Berlin-Ichthyosaur State Park in Nevada contains evidence of a new sea creature that preyed on 45-foot-long ichthyosaurs. McMenamin reported his findings at the annual meeting of the Geological Society of American in Minneapolis. He said that there is a site in Nevada that holds the remains of nine ichthyosaurs of what could be the ancient den of a giant Kraken. He said when he arrived at the state park...

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2011-02-25 07:45:00

Scientists said Thursday that a mud volcano in Indonesia is responsible for displacing more than 13,000 families, and shows no sign of stopping for the better part of the next quarter century, as it continues to emit flammable gas through a deepening lake of sludge. Underground pressure means the volcano -- located in Sidoarjo, East Java -- could continue to gush out gray mud until 2037, when volumes will become small and insignificant, according to a computer model. But gas will continue...

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2009-04-27 09:15:00

Impact didn't lead to mass extinction 65 million years ago, geologists find The enduringly popular theory that the Chicxulub crater holds the clue to the demise of the dinosaurs, along with some 65 percent of all species 65 million years ago, is challenged in a paper to be published in the Journal of the Geological Society on April 27, 2009. The crater, discovered in 1978 in northern Yucutan and measuring about 180 kilometers (112 miles) in diameter, records a massive extra-terrestrial...

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2009-02-17 11:20:38

The argument over whether an outcrop of rock in South West Greenland contains the earliest known traces of life on Earth has been reignited, in a study to be published in the Journal of the Geological Society on 23 February. The research, led by Martin J. Whitehouse at the Swedish Museum of Natural History, argues that the controversial rocks "Ëœcannot host evidence of Earth's oldest life', reopening the debate over where the oldest traces of life are located. The small island of...

2008-09-19 03:00:23

By Zhu, Wenbin Zhang, Zhiyong; Shu, Liangshu; Lu, Huafu; Su, Jinbao; Yang, Wei Mafic dykes are observed in the Korla region along the northern Tarim Block, NW China. Our sensitive high-resolution ion microprobe U-Pb zircon ages, the first determined for these dykes, indicate that the mafic dykes were mainly formed at 650-630 Ma, and thus document the youngest known igneous activity associated with rifting in the Tarim Block during the Neoproterozoic. Combined with previous geochronological...

2008-09-19 03:00:23

By Schofield, D I Evans, J A; Millar, I L; Wilby, P R; Aspden, J A A new U-Pb date of 615.2 +- 13 (2sigma) Ma for the Twt Hill Granite, North Wales, contrasts with an Rb-Sr isochron age of 491 +- 12 (2sigma) Ma from the same body. The latter age is thought to result from isotope resetting during regional low-grade metamorphism or fault reactivation. The Rb-Sr age also coincides with the onset of latest Cambrian to Early Tremadoc regression and is taken to reflect tectonic uplift prior to...

2008-08-01 03:00:26

By Friend, C R L Strachan, R A; Kinny, P D Abstract: Basement gneiss inliers within the Scottish Caledonides have been conventionally correlated with the Archaean Lewisian Gneiss Complex of the Caledonian foreland. Alternatively, the inliers could represent allochthonous terranes accreted to Laurentia before or during the Caledonian orogeny. Secondary ionization mass spectrometry U-Pb zircon dating indicates that the Ribigill, Borgie, Farr and Western Glenelg basement inliers are...

2008-06-06 03:00:33

By Oliver, Grahame J H Wilde, Simon A; Wan, Yusheng Abstract: Thirty-seven granitoids from Scotland have been dated using the sensitive high-resolution ion microprobe zircon method. Granitoids were intruded during: (1) crustal stretching at c. 600 Ma after Rodinia broke up (A-types); (2) the Grampian event of crustal thickening when the Midland Valley Arc terrane collided with Laurentia at c. 470 Ma (S-types); (3) erosion and decompression of the over-thickened Laurentian margin at c. 455...