Author: Parsons CorporationPublisher:
ISBN:
Category : Geology
Languages : en
Pages : 44
Book Description
The Geology of Western Nicaragua
Author: Parsons CorporationPublisher:
ISBN:
Category : Geology
Languages : en
Pages : 44
Book Description
The Geology of Western Nicaragua ;R.L.W. Williams
Author: The geology of western Nicaragua
Author: Parsons CorporationPublisher:
ISBN:
Category : Geology
Languages : en
Pages :
Book Description
The Geology of Western Nicaragua
Author: Parsons CorporationPublisher:
ISBN:
Category : Geology
Languages : en
Pages : 221
Book Description
The Structure of South-western Nicaragua
Author: Geology of an Evolving Island Arc
Author: Hartmut SeyfriedPublisher:
ISBN:
Category : Geology
Languages : de
Pages : 454
Book Description
Historical Geography of Western Nicaragua
Author: David R. RadellPublisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 618
Book Description
Sectionalism has been a pervasive influence in the history of Nicaragua. During the colonial period the cities of Leon and Granada vied for economic, social and political dominance. The political and economic strength of each city was dependent on its respective trade outlet, the productivity of its tributary area, and the size of its dependent population. With the civil wars of the 19th century Managua became the compromise capital. The new importance of coffee and cotton as export crops, coupled with major transportation improvements, has strongly enhanced Managua's competitive position in this century. Beneath a veneer of political stability a deep-seated sectional rivalry remains a dominant theme of Nicaraguan life. The historical and geographical bases of this rivalry are examined in this study. (Author).
Volcanic History of Western Nicaragua and Geochemical Evolution of the Central American Volcanic Front
Author: Publisher:
ISBN:
Category : Geochemistry
Languages : en
Pages : 134
Book Description
As part of a long term study on the geochemical evolution of the Central American Volcanic Front led by my advisor, Michael Carr and colleagues at Rutgers University, my dissertation work centers around the development of a better understanding of the duration and scope of a Central America volcanic lull to better constrain and interpret possible causation. To so, I have attempted to improve our knowledge of the volcanic record during this interval by attempting to locate samples that might have erupted during this time period. This effort yielded ages on volcanic samples ranging from 1.1 to 3.6 Ma and, thus, substantially reducing the volcanic gap in Nicaragua. Thus, it may be that while Nicaraguan volcanism was reduced in volume between 7 and 3.6 Ma, activity was still occurring albeit at a substantially reduced rate. Results of this effort, has given a more complete record that permits more precise analysis of how the volcanic front has evolved since the Miocene. Geochemical analyses of the active and Miocene volcanic fronts document that U/Th values increased by nearly threefold following the Central America, Pacific Coast "carbonate crash" that has been documented at about 10 Ma, related to the closing of the Isthmus of Panama. Although this transition was considered rather abrupt, data from this study indicate that the transition was somewhat more gradual, occurring over the last 7 myr. An increase in La/Yb Since the Miocene and with increasing distance from the trench, is perhaps due to backward migration of the arc towards the trench. A systematic increase in Zr/Nb towards the trench shows no correlation with age is indicative of a stronger subduction signal near the trench. Geochemical analysis of Tertiary volcanic rocks from El Salvador to Costa Rica combined with available 40Ar/39Ar ages indicate that U/Th values along the Nicaraguan segment of the front have increased since the Miocene, while Ba/La values have not. These values have both remained the same towards the edges of the front.
Hydrogeological Characterization of the Western Part of Managua, Nicaragua
Author: Francis Rivera GonzálezPublisher:
ISBN: 9789197684859
Category :
Languages : en
Pages : 78
Book Description
PROVIDENCIA ISLAND
Author: Alan L. SmithPublisher: Geological Society of America
ISBN: 081371219X
Category : Science
Languages : en
Pages :
Book Description
"This volume presents new and previously published results for the geology, geochemistry, petrology and isotopic ages from the Providencia island group to unravel its complex history and evolution"--