Wooden, J. L. Doherty, William 1991. Fitton, J. G.
An alternate view is that plutons commonly are formed not by ascent of large magma diapirs, but rather by aggregation of smaller volumes of magma that ascend as dikes.
Hill, R. I.
We use cookies to distinguish you from other users and to provide you with a better experience on our websites. and The eastern batholith formed as a laterally transgressing arc which moved away from those older rocks between 105 and 80 Ma, intruding metasedimentary rocks. San Diego, Orange, and Riverside Counties and much of Baja California are underlain by a complex, three- dimensional mosaic of intrusive igneous plutons and older pre-batholithic metamorphic country rocks. When did most of the magma that became the Peninsular Ranges Batholith (PRB) form and what caused it? Wooden, J. L. and Accusam. Check if you have access via personal or institutional loginEarth and Environmental Science Transactions of The Royal Society of EdinburghAgua Blanca fault—a major transverse structure of northern Baja California, MexicoIsland arc magmatism in relation to the evolution of the crust and mantlePotassium-argon geochronometry of Mesozoic igneous rocks in Nevada, Utah, and southern CaliforniaChemical trends across Cretaceous batholithic rocks of southern CaliforniaBatholithic rocks of southern California—a model for the petrochemical nature of their source materialsEvaluation of the decay constant of uranium 235 from lead isotope ratiosU-Pb isotope analyses of zircons from Cretaceous plutons of the Peninsular and Transverse Ranges, southern CaliforniaVariations of major chemical constituents across the central Sierra Nevada batholithSources of continental crust: neodymium isotope evidence from the Sierra Nevada and Peninsular RangesA neodymium and strontium isotopic study of the Mesozoic calc-alkaline granitic batholiths of the Sierra Nevada and Peninsular Ranges, CaliforniaSan Telmo ring complex, Peninsular Ranges batholith, northwest Baja California, MexicoCompositional variations and abundances of selected elements in granitoid rocks and constituent minerals, Central Sierra Nevada batholith, CaliforniaVariation in ferrous-ferric ratios in the Central Sierra Nevada batholith, U.S.ARb-Sr isotopic systematics in the Peninsular Ranges batholith of southern and Baja CaliforniaGeology of the Cuyumaca Peak quadrangle, San Diego County, CaliforniaChronology of emplacement of Mesozoic batholithic complexes in California and western NevadaPlutonic zones in the Peninsular Ranges of southern California and northern Baja CaliforniaReconnaissance geology of the state of Baja CaliforniaThe magnetite ilmenite line in peninsular CaliforniaTrace element and isotopic variations in the San Telmo ring complex, NW Baja California del Norte, MexicoRare earth element distributions among minerals in a granodiorite and their petrogenetic implicationsREE variations across the Peninsular Ranges batholith: implications for batholithic petrogenesis and crustal growth in magmatic arcsLateral velocity variations in southern California. Gehrels, George E. Hawkesworth, C. J. Kempton, P. D. Hallberg, J.A. The main gradients in chemical composition from W to E are found among the trace elements, with Ba, Sr, Nb and the light rare earth elements increasing by more than a factor of two, and P, Rb, Pb, Th, Zn and Ga showing smaller increases. Figure 1: Extent of Peninsular Ranges Batholith (PRB), San Diego County
It is composed of volcanic, volcaniclastic rocks of Cretaceous age (130 to 120 Ma). Cassidy, K.F. Hallberg, J.A. 1991.
Perhaps better than elsewhere in the Cordillera, the batholith shows beautifully developed asymmetries in chemical and isotopic properties. Doherty, William 1990. and Dickinson, William R. and
The rocks we see around us in the park were created in such a process, Dickinson, William R. Barley, M.E. Wooden, J. L.
Leary, Peter C. and and A western batholith, which was more heterogeneous in composition, formed as a static magmatic arc between 140 and 105 Ma and was intrusive in part into related volcanic rocks. Sutcliffe, Richard H. Cassidy, K.F. Ormerod, D. S. 1991. Wooden, J. L. A batholith is formed when many plutons converge to form a huge expanse of granitic rock. During mesozoic period (140-80mya) due to Subduction and roots of a volcanic arc formed. Smith, Alan R. and
1. Sutcliffe, Richard H. The core of the Peninsular Ranges is composed of a series of plutions; collectively they form what is known as a batholith. Groves, D.I.
The new, shallower subduction plane begins to create the La Posta-type melts that will form the large plutons of the eastern zone. Low-initial-Sr felsic plutons of the northwestern Peninsular Ranges batholith, southern California, and the role of mafic-felsic magma mixing in continental crust formation and Ormerod, D. S. Some batholiths are mammoth, paralleling past and present A batholith is an exposed area of (mostly) continuous plutonic rock that covers an area larger than 100 square kilometers (40 square miles). Hill, R. I. 1992. Barnett, Robert L. In detail the petrogenesis of the Peninsular Ranges Batholith is not completely understood, but many general aspects of the origin are clear. Henyey, Thomas L. 1990. Barley, M.E. Mg and the transition metals decrease strongly towards the E, with Sc, V and Cu falling to less than half of their value in the most westerly rocks. and
1992. magma.
Detailed radiometric dating has shown that it is a composite of two batholiths. Although they may appear uniform, batholiths are in fact structures with complex histories and compositions. Butler, Robert F.
1992. This new motion would create the third magmatic arc that forms the eastern zone of the Peninsular Ranges Batholith.
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