Characteristics of internal contacts in the Tuolumne Batholith, central Sierra Nevada, California (USA): Implications for episodic emplacement and physical processes in a continental arc magma chamber

2005 ◽  
Vol 117 (9) ◽  
pp. 1242 ◽  
Author(s):  
Jiří žák ◽  
Scott R. Paterson
Keyword(s):  
Magma Chamber ◽  
Sierra Nevada ◽  
Physical Processes ◽  
Continental Arc ◽  
Arc Magma

MESOZOIC SPATIOTEMPORAL EVOLUTION OF THE CENTRAL SIERRA NEVADA ARC LITHOSPHERE: INVESTIGATING MAGMATIC RECORDS OF DYNAMIC CONTINENTAL ARC ACTIVITY

2019 ◽  
Author(s):  
Katie E. Ardill ◽  
◽  
Scott R. Paterson ◽  
Snir Attia ◽  
Ariel Borsook ◽  
...  
Keyword(s):  
Sierra Nevada ◽  
Spatiotemporal Evolution ◽  
Continental Arc

Magmatic lobes as "snapshots" of magma chamber growth and evolution in large, composite batholiths: An example from the Tuolumne intrusion, Sierra Nevada, California

2010 ◽  
Vol 122 (11-12) ◽  
pp. 1912-1931 ◽  
Author(s):  
V. Memeti ◽  
S. Paterson ◽  
J. Matzel ◽  
R. Mundil ◽  
D. Okaya
Keyword(s):  
Magma Chamber ◽  
Sierra Nevada

scholarly journals Cr - spinel and clinopyroxene compositions from metagabbro of Nui Ngoc complex in Tam Ky area: evidence of island - arc magma

2021 ◽  
Vol 62 (5) ◽  
pp. 1-11
Author(s):  
Thanh Xuan Ngo ◽  
Du Khac Nguyen ◽  
Dao Anh Vu . ◽  
Chi Thi Pham ◽  
Hanh Hong Thi Nguyen ◽  
...  
Keyword(s):  
Suture Zone ◽  
Island Arc ◽  
Research Results ◽  
Continental Arc ◽  
Study Results ◽  
Ophiolitic Complex ◽  
Arc Magma

The hornblende and biotite - bearing metagabbro of the Nui Ngoc complex were exposed into a few small blocks in the southwest Tam Ky city and were viewed as parts of the Tam Ky - Phuoc Son ophiolitic complex (TPO). These rocks were undergone mylonitic deformation and metamorphism. The rocks consist mainly of orthopyroxene, clinopyroxene, plagioclase, olivine, hornblende, biotite and very few microscopic Cr - spinel. The clinopyroxene and Cr - spinel minerals were analyzed for their composition by EPMA, the results showed that: (1) The clinopyroxenes have low Al2O3 (3,2÷3,5 wt %), TiO2 (0,70÷0,82 wt %) contents and (2) the Cr - spinels have low TiO2 (0,23÷0,58 wt %) content and Mg#100* (Mg/ (Mg+Fe2+)) (32÷42) but has medium Cr# (Cr/ (Cr+Al)) (45÷52).These features are similar to those of rocks formed in anoceanic - oceanicsubduction zone that was reported for the plagiogranite of Dieng Bong complex nearby. This study results combined with previous research results in the Tam Ky - Phuoc Son suture zone show the existence of island arc, continental arc, and MOR - magmatic types.

Assembly of a dike-fed magma chamber: The Jackass Lakes pluton, central Sierra Nevada, California

1996 ◽  
Vol 108 (8) ◽  
pp. 926-940 ◽  
Author(s):  
Brendan A. McNulty ◽  
Weixing Tong ◽  
Othmar T. Tobisch
Keyword(s):  
Magma Chamber ◽  
Sierra Nevada

scholarly journals A survey of Sierra Nevada magmatism using Great Valley detrital zircon trace-element geochemistry: View from the forearc

Lithosphere ◽  
2019 ◽  
Vol 11 (5) ◽  
pp. 603-619
Author(s):  
Kathleen DeGraaff Surpless ◽  
Diane Clemens-Knott ◽  
Andrew P. Barth ◽  
Michelle Gevedon
Keyword(s):  
Trace Element ◽  
Sierra Nevada ◽  
Detrital Zircon ◽  
Geochemical Data ◽  
Trace Element Geochemistry ◽  
Arc Magmatism ◽  
Forearc Basin ◽  
Element Geochemistry ◽  
Continental Arc ◽  
Great Valley

AbstractThe well-characterized Sierra Nevada magmatic arc offers an unparalleled opportunity to improve our understanding of continental arc magmatism, but present bedrock exposure provides an incomplete record that is dominated by Cretaceous plutons, making it challenging to decipher details of older magmatism and the dynamic interplay between plutonism and volcanism. Moreover, the forearc detrital record includes abundant zircon formed during apparent magmatic lulls, suggesting that understanding the long-term history of arc magmatism requires integrating plutonic, volcanic, and detrital records. We present trace-element geochemistry of detrital zircon grains from the Great Valley forearc basin to survey Sierra Nevadan arc magmatism through Mesozoic time. We analyzed 257 previously dated detrital zircon grains from seven sandstone samples of volcanogenic, arkosic, and mixed compositions deposited ca. 145–80 Ma along the length of the forearc basin. Detrital zircon trace-element geochemistry is largely consistent with continental arc derivation and shows similar geochemical ranges between samples, regardless of location along strike of the forearc basin, depositional age, or sandstone composition. Comparison of zircon trace-element data from the forearc, arc, and retroarc regions revealed geochemical asymmetry across the arc that was persistent through time and demonstrated that forearc and retroarc basins sampled different parts of the arc and therefore recorded different magmatic histories. In addition, we identified a minor group of Jurassic detrital zircon grains with oceanic geochemical signatures that may have provenance in the Coast Range ophiolite. Taken together, these results suggest that the forearc detrital zircon data set reveals information different from that gleaned from the arc itself and that zircon compositions can help to identify and differentiate geochemically distinct parts of continental arc systems. Our results highlight the importance of integrating multiple proxies to fully document arc magmatism, demonstrating that detrital zircon geochemical data can enhance understanding of a well-characterized arc, and these data may prove an effective means by which to survey an arc that is inaccessible and therefore poorly characterized.

Secular variations in magmatism during a continental arc to post-arc transition: Plio-Pleistocene volcanism in the Lake Tahoe/Truckee area, Northern Sierra Nevada, California

Lithos ◽  
2011 ◽  
Vol 123 (1-4) ◽  
pp. 225-242 ◽  
Author(s):  
Brian L. Cousens ◽  
Christopher D. Henry ◽  
Bradley J. Harvey ◽  
Tim Brownrigg ◽  
Julie Prytulak ◽  
...  
Keyword(s):  
Sierra Nevada ◽  
Lake Tahoe ◽  
Secular Variations ◽  
Continental Arc ◽  
Pleistocene Volcanism
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