نتایج جستجو برای: outcrop

تعداد نتایج: 1295  

2010
C. Geoffrey Wheat Hans W. Jannasch Andrew T. Fisher Keir Becker Jessica Sharkey Samuel Hulme

[1] Integrated Ocean Drilling Program (IODP) Hole 1301A was drilled, cased, and instrumented with a long‐term, subseafloor observatory (CORK) on the eastern flank of the Juan de Fuca Ridge in summer 2004. This borehole is located 1 km south of ODP Hole 1026B and 5 km north of Baby Bare outcrop. Hole 1301A penetrates 262 m of sediment and 108 m of the uppermost 3.5 Ma basaltic basement in an are...

Journal: :Remote Sensing 2018
Sara Salehi Sandra Lorenz Erik Vest Sørensen Robert Zimmermann Rasmus Fensholt Bjørn Henning Heincke Moritz Kirsch Richard Gloaguen

Remote and extreme regions such as in the Arctic remain a challenging ground for geological mapping and mineral exploration. Coastal cliffs are often the only major well-exposed outcrops, but are mostly not observable by air/spaceborne nadir remote sensing sensors. Current outcrop mapping efforts rely on the interpretation of Terrestrial Laser Scanning and oblique photogrammetry, which have ina...

2017
Guillaume Pirot Niklas Linde Grégoire Mariethoz John H. Bradford

Inversion methods that build on multiple-point statistics tools offer the possibility to obtain model realizations that are not only in agreement with field data, but also with conceptual geological models that are represented by training images. A recent inversion approach based on patch-based geostatistical resimulation using graph cuts outperforms state-of-the-art multiple-point statistics m...

Journal: :Philosophical transactions of the Royal Society of London. Series B, Biological sciences 2014
Kathleen G Ferris Jason P Sexton John H Willis

Speciation can occur on both large and small geographical scales. In plants, local speciation, where small populations split off from a large-ranged progenitor species, is thought to be the dominant mode, yet there are still few examples to verify speciation has occurred in this manner. A recently described morphological species in the yellow monkey flowers, Mimulus filicifolius, is an excellen...

Journal: :American Antiquity 2021

Seeman, Morris, and Summers misrepresent or misunderstand the arguments we have made, as well their own previous work. Here, correct these inaccuracies. We also reiterate our support for hypothesis-driven evidence-based research.

2003
Ben Marwick

duction sequences. The model focuses on the relationship between hominid communication systems and the ability of hominid groups to exploit resources. Using raw-material movement data as a parallel inquiry into the emergence of modern human abilities such as language it is possible to refine and strengthen the argument for the emergence of modern human behaviours in Africa sometime before 100,0...

Journal: :Computers & Geosciences 2012
Toshiyuki Koyama Atsushi Yamaji Katsushi Sato

6 Linear structures perpendicular to an outcrop surface are easily discovered, but those parallel to the surface are not, giving rise to a biased orientation distribution of the structures. Here, we propose a bias correction method: Statistical inversion was conducted to unbias the distribution of the axes of mesoscale slump folds in the Cretaceous Izumi Group, Japan using the orientation distr...

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