Paleomagnetic Evidence for Microplate Tectonic Development of Southern and Baja California

1991 ◽  
Author(s):  
Steve P. Lund ◽  
David J. Bottjer
Keyword(s):  
Baja California ◽  
Tectonic Development

Paleomagnetism of Jurassic Rocks from Southern Alaska, and the Tectonic Implications

1974 ◽  
Vol 11 (7) ◽  
pp. 976-997 ◽  
Author(s):  
D. R. Packer ◽  
D. B. Stone
Keyword(s):  
North America ◽  
Opposite Direction ◽  
Selection Criteria ◽  
Baja California ◽  
Pole Position ◽  
Clockwise Rotation ◽  
Oriented Samples ◽  
Tectonic Development ◽  
Jurassic Rocks ◽  
The Mean

Oriented samples of rocks of Jurassic age were collected from 24 separate sites located in southern and southwestern Alaska. Paleomagnetic measurements were made on these rocks, and various selection criteria were applied to obtain a mean Jurassic paleopole position of 50°N and 295°E with an α95 of 14.2°. This pole position is displaced from the mean paleopole of North America in the opposite direction to that predicted by Carey's orocline hypothesis for the development of Alaska. Based on this pole position, northward movement and clockwise rotation of southern Alaska must have occurred since Jurassic times, perhaps in a manner analogous to the motion of Baja California today. This Baja–Alaska model for the tectonic development of southern Alaska is currently being tested.

Composition and provenance of the Upper Cretaceous to Eocene sandstones in Central Palawan, Philippines: Constraints on the tectonic development of Palawan

Island Arc ◽  
2000 ◽  
Vol 9 (4) ◽  
pp. 611-626 ◽  
Author(s):  
Shigeyuki Suzuki ◽  
Shizuo Takemura ◽  
Graciano P. Yumul ◽  
Sevillo D. David ◽  
Daniel K. Asiedu
Keyword(s):  
Upper Cretaceous ◽  
Tectonic Development

Health and Health Care Problems Among the Kumiai of San Antonio Necua and Their Indigenous Relatives in Baja California

2003 ◽  
Vol 1 (1) ◽  
pp. 140-157 ◽  
Author(s):  
K. Jill Fleuriet
Keyword(s):  
Health Care ◽  
Baja California ◽  
San Antonio ◽  
Rural Poverty ◽  
Indigenous Communities ◽  
Traditional Healers ◽  
Medical Pluralism ◽  
Indigenous Groups ◽  
Health And Illness ◽  
Care Problems

The rural Kumiai community of San Antonio Necua is one of the few remaining indigenous communities in Baja California, Mexico. Necuan health and health care problems are best understood through a consideration of the effects of colonialism and marginalization on indigenous groups in northern Baja California as well as a tradition of medical pluralism in Mexico. The lack of traditional healers and biomedical providers in the community, high rates of preventable or manageable illnesses, and a blend of biomedical, folk mestizo, and traditional indigenous beliefs about health and illness reflect current conditions of rural poverty and economic isolation. Descriptions of health and health care problems are based on ethnographic fieldwork among the Kumiai, their Paipai relatives, and their primary nongovernmental aid organization.

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