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Geobulletin alpha

News from the Geoblogosphere feed

by Stratigraphy.net
New from Snet: Lithologs, a new tool to create lithological/sedimentological logs online..

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Geosonnet 31

Gyrations of a topsy-turvy world Could spur migration of the cryosphere No snowball Earth, just poles and tropics whorled The data which support this are unclear. Precambrian magnetic fields suggest That tropics, poles exchanged with frightful speed. Magnetic hysteresis is the test Anorthosite and feldspar crystals need. A shaky witness cross-examination The steep magnetic field begins to fray

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