Robert A. Gastaldo

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The terrestrial crisis that reportedly parallels the P/Tr marine mass extinction is based mainly on Northern Hemisphere microfloral assemblages and Southern Hemisphere Gondwanan macrofloral collections. It is well established that taphonomic filters control the ultimate collectable fossil assemblage in any depositional regime. Recognition and comparison of(More)
Isolated logs preserved in the A ¨ lterer Flußsande of the Weißelster basin, Germany, are examined relative to their subjacent bedform. Paleocurrent analyses conducted on both the log orientation and its underlying bedform are used to determine whether or not any relationship exists between these two structures. Two patterns emerge from this investigation.(More)
Leaves and other non-woody canopy parts are rarely preserved in coals. Although the pH of pore waters within peat swamps is usually relatively low (Ä3.5), providing geochemical conditions that would promote preservation after burial, shed canopy parts may remain at the air–soil interface for periods of up to several months prior to burial by additional(More)
Copyright not claimed on content prepared wholly by U.S. government employees within scope of their employment. Individual scientists are hereby granted permission, without fees or further requests to GSA, to use a single figure, a single table, and/or a brief paragraph of text in other subsequent works and to make unlimited copies for noncommercial use in(More)
Partner Organizations Matching funds have been provided by the The Gordon and Betty Moore Foundation has supported a diversity of NCEAS projects. A new project is designed to identify, map and compare the importance of human impacts on the California Current marine ecosystem. This project partners the University of California with non-governmental(More)
E xamination of the plant taphonomic character and sedimentological processes responsible for preservation of an in situ, erect forest above the Penn-sylvanian Blue Creek coal of the Mary Lee coal cycle, Alabama, provides evidence for rapid generation of accommodation space by coseismic subsidence. Standing vegetation is preserved at least to 4.5 m (15 ft)(More)
In most cases authors are permitted to post their version of the article (e.g. in Word or Tex form) to their personal website or institutional repository. Authors requiring further information regarding Elsevier's archiving and manuscript policies are encouraged to visit: a b s t r a c t a r t i c l e i n f o Coastal and deltaic Holocene peat accumulations(More)
In most cases authors are permitted to post their version of the article (e.g. in Word or Tex form) to their personal website or institutional repository. Authors requiring further information regarding Elsevier's archiving and manuscript policies are encouraged to visit: An autochthonous glossopterid flora with latest Permian palynomorphs and its(More)