Issues
Volume 20, Number 1
January 1909
ISSN 0016-7606
EISSN 1943-2674
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Bulletin of the Geological Society of America
Articles
Bibliography of the geology, mineralogy, and paleontology of Brazil
GSA Bulletin January 01, 1909, Vol.20, 1-132. doi:10.1130/GSAB-20-1
Present phase of the Pleistocene problem in Iowa
GSA Bulletin January 01, 1909, Vol.20, 133-152. doi:10.1130/GSAB-20-133
First calcareous fossils and the evolution of the limestones
GSA Bulletin January 01, 1909, Vol.20, 153-170. doi:10.1130/GSAB-20-153
Geometry of faults
GSA Bulletin January 01, 1909, Vol.20, 171-196. doi:10.1130/GSAB-20-171
Trap sheets of the Lake Nipigon Basin
GSA Bulletin January 01, 1909, Vol.20, 197-222. doi:10.1130/GSAB-20-197
Contribution to the geology of the Silver Peak quadrangle, Nevada
GSA Bulletin January 01, 1909, Vol.20, 223-264. doi:10.1130/GSAB-20-223
Kinderhook faunal studies—V, the fauna of the Fern Glen formation
GSA Bulletin January 01, 1909, Vol.20, 265-332. doi:10.1130/GSAB-20-265
Shortage of coal in the northern Appalachian coal field
GSA Bulletin January 01, 1909, Vol.20, 333-340. doi:10.1130/GSAB-20-333
Aftonian mammalian fauna
GSA Bulletin January 01, 1909, Vol.20, 341-356. doi:10.1130/GSAB-20-341
Unconformity in the so-called Laramie of the Raton coal field, New Mexico
GSA Bulletin January 01, 1909, Vol.20, 357-368. doi:10.1130/GSAB-20-357
Proposed classification of crystals based on the recognition of seven fundamental types of symmetry
GSA Bulletin January 01, 1909, Vol.20, 369-398. doi:10.1130/GSAB-20-369
Aftonian sands and gravels in western Iowa
GSA Bulletin January 01, 1909, Vol.20, 399-408. doi:10.1130/GSAB-20-399
Striations and U-shaped valleys produced by other than glacial action
GSA Bulletin January 01, 1909, Vol.20, 409-416. doi:10.1130/GSAB-20-409
Clearing out of the Wallibu and Rabaka gorges on Saint Vincent island
GSA Bulletin January 01, 1909, Vol.20, 417-426. doi:10.1130/GSAB-20-417
Paleogeography of North America
GSA Bulletin January 01, 1909, Vol.20, 427-606. doi:10.1130/GSAB-20-427
Proceedings of the Twenty-first Annual Meeting, held at Baltimore, Maryland, December 29, 30, and 31, 1908
GSA Bulletin January 01, 1909, Vol.20, 607-749. doi:10.1130/GSAB-20-607
Index to Volume 20
GSA Bulletin January 01, 1909, Vol.20, 737-749. doi:10.1130/GSAB-20-737
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