Mechanics of Crustal Earthquakes

Brace, W. F.; Robin, Pierre-Yves F.; Riley, Don K

doi:10.21236/ad0727346

Cited by 2 publications

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“…Hence the two-species view of early hominid evolution is not compatible with this model of population ecology, for it fails to give sufficient evidence to explain the extinction of robustus. On the other hand, dental and anatomical evidence discussed by Brace (1971) and Wolpoff (1970Wolpoff ( , 1971) seems to support a simpler single-species view. This is more reasonable from the point of view of population ecology.…”

Section: Example: the Number Of Early Hominid Speciesmentioning

confidence: 93%

A generalized model for competition between hominid populations

Weiss

1972

Journal of Human Evolution

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A simple mathematical model can represent competition between two hominid populations which includes elements of both trophic preemption and killing. The ultimate outcome of such competition can bc determined if certain parameters are estimated. Various values of these parameters can represent various types of competition which occur between hominid groups. The model is used to argue that the two-species explanation of Australopithecine fossils is unrealktic and that a one-species view is more compatible with the facts. This model lends itself to first-order approximation of many situations of interest to anthropologists. The form of the equations for several situations is given, as is a solution for the ultimate equilibrium population densities of the two competing groups.

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Section: Example: the Number Of Early Hominid Speciesmentioning

confidence: 93%

A generalized model for competition between hominid populations

Weiss

1972

Journal of Human Evolution

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Friction in rocks

Logan¹

1975

Reviews of Geophysics

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J. C. Jaeger's (personal communication, 1971) first law of friction summarizes much of the confusion and uncertainty that has attended investigations into the frictional properties of rocks. The problems of friction in rocks are important in at least three major areas: (1) earthquake generation and source mechanisms, (2) delineation of mechanical units in folding of layered sequences, and (3) behavior of prefractured rock masses. Problems involving the frictional behavior of rock may be divided roughly into two areas depending upon the normal stress across the sliding surface: (1) engineering applications to problems of slope stability, landslides, etc., where the normal stress is generally on the order of tens of bars and (2) structural and tectonic problems where the normal stress may be in the order of kilobars.

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Mechanics of Crustal Earthquakes

Cited by 2 publications

References 0 publications

A generalized model for competition between hominid populations

A generalized model for competition between hominid populations

Friction in rocks

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