Climatic and tectonic controls on Jurassic intra-arc basins related to northward drift of North America

Busby, Cathy J.; Bassett, Kari N.; Steiner, Maureen B.; Riggs, Nancy R.

doi:10.1130/0-8137-2393-0.359

Cited by 19 publications

(44 citation statements)

References 70 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…11). Small, multivent, polygenetic eruptive centers formed along releasing bends in the strike-slip fault; the deposits within the bends interfinger with ignimbrite sheets emitted from calderas at releasing step-overs produced at other locations along the Sawmill Canyon fault zone (Busby et al, 2005). According to the Busby and Bassett (2007), the best modern analogue to the Santa Rita Glance Conglomerate is probably the Sumatra volcanic arc in Indonesia.…”

Section: Subduction Zonesmentioning

confidence: 98%

“…Busby and Bassett (2007) focus on a strike-slip basin within the Jurassic arc of southern Arizona to elaborate a facies model for strike-slip basins dominated by volcanism. Late Jurassic, intraarc, strike-slip basins developed along the Sawmill Canyon fault zone, probably a strand of the MojaveSonora megashear system (Busby et al, 2005). The spatial distribution of volcanic lithofacies and vents Fig.…”

Section: Subduction Zonesmentioning

confidence: 99%

See 1 more Smart Citation

Volcanism in Reverse and Strike-Slip Fault Settings

Tibaldi

Pasquarè

Tormey³

2009

New Frontiers in Integrated Solid Earth Sciences

View full text Add to dashboard Cite

Traditionally volcanism is thought to require an extensional state of stress in the crust. This review examines recent relevant data demonstrating that volcanism occurs also in compressional tectonic settings associated with reverse and strike-slip faulting. Data describing the tectonic settings, structural analysis, analogue modelling, petrology, and geochemistry, are integrated to provide a comprehensive presentation of this topic. An increasing amount of field data describes stratovolcanoes in areas of coeval reverse faulting, and shield volcanoes, stratovolcanoes, and monogenic edifices along strike-slip faults, whereas calderas are mostly associated with pull-apart structures in transcurrent regimes. Physically-scaled analogue experiments simulate the propagation of magma in these settings, and taken together with data from subvolcanic magma bodies, they provide insight into the magma paths followed from the crust to the surface. In several transcurrent tectonic plate boundary regions, volcanoes are aligned along both the strikeslip faults and along fractures normal to the local least principal stress (σ 3 ). At subduction zones, intraarc tectonics is frequently characterised by contraction or transpression. In intra-plate tectonic settings, volcanism can develop in conjunction with reverse faults or strike slip faults. In most of these cases, magma appears to reach the surface along fractures striking parallel to the local σ 1 . In some cases, there is a direct geometric control by the substrate strikeslip or reverse fault: magma is transported beneath A. Tibaldi ( ) Department of Geological Sciences and Geotechnologies, University of Milan-Bicocca, Italy e-mail: alessandro.tibaldi@unimib.it the volcano to the surface along the main faults, irrespective of the orientation of σ 3 . The petrology and geochemistry of lavas erupted in compressive stress regimes indicate longer crustal residence times, and higher degrees of lower crustal and upper crustal melts contributing to the evolving magmas when compared to lavas from extensional stress regimes. Small volumes of magma tend to rise to shallow crustal levels, and magma mixing is common in the compressional regimes. In detailed studies from the Andes and Anatolia, with geographic and temporal coverage with which to compare compressional, transcurrent and extensional episodes in the same location, there do not appear to be changes to the mantle or crustal source materials that constitute the magmas. Rather, as the stress regime becomes more compressional, the magma transport pathways become more diffuse, and the crustal residence time and crustal interaction increases.

show abstract

Section: Subduction Zonesmentioning

confidence: 98%

Section: Subduction Zonesmentioning

confidence: 99%

Volcanism in Reverse and Strike-Slip Fault Settings

Tibaldi

Pasquarè

Tormey³

2009

New Frontiers in Integrated Solid Earth Sciences

View full text Add to dashboard Cite

show abstract

“…This led me to speculate that, during the breakup of Pangea in early Mesozoic time, the paleo-Pacific Ocean basin was composed of very large, old lithospheric plates that subducted to produce extensional continental arcs along the western margin of the paleo-Pacific ocean basin (Busby et al, 1998;Figure 19.1A). Since the modern world is dominated by long-lived subduction zones, we must look to the geologic record to learn more about the growth of continents in extensional (Busby-Spera, 1988;Busby et al, 2005). (B) The Late Jurassic arc records sinistral oblique convergence along sinistral strike-slip faults related to rifting along the Gulf of Mexico (Silver and Anderson, 1974).…”

Section: Tectonic Settings and Evolution Of Thoughtmentioning

confidence: 99%

“…The Early to Middle Jurassic erg field of the present-day Colorado Plateau blew supermature quartz sands into, across, and along the full width and length of the arc graben depression, where tectonic subsidence preserved them to even greater thicknesses than they were in the backarc area of the present-day plateau ( Figure 19.3B). Uniformly fast tectonic subsidence at rates of about 300-1,000 m/my resulted in preservation of nonmarine and shallow marine sections up to 10 km thick, with no erosional unconformities (Busby et al, , 2005. In the southern Arizona segment of the continental arc, basement rocks outcrop nowhere at the surface, although they bound the graben-depression, and the isotopic characteristics of Mesozoic and Cenozoic igneous rocks indicate that they are present beneath it (Tosdal et al, 1989).…”

Section: Late Triassic To Middle Jurassic Extensional Arcmentioning

confidence: 99%

Extensional and Transtensional Continental ARC Basins: Case Studies from the Southwestern United States

Busby

2011

Tectonics of Sedimentary Basins

Self Cite

View full text Add to dashboard Cite

Extensional and transtensional continental arc basins preserve very thick, continuous sequences and are an important contributor to the growth of continents; therefore, it is important to understand how they evolve. In this chapter, I describe four continental arc basin types, using Mesozoic to Cenozoic case studies from the SW US: (1) early-stage, low-lying extensional; (2) early-stage, low-lying transtensional; (3) late-stage, highstanding extensional; and (4) late-stage high-standing transtensional.During the breakup of Pangea in early Mesozoic time, the paleo-Pacific Ocean basin was likely composed of very large, old, cold plates; these rolled back during subduction to produce subsidence and extension in the upper plate, particularly along the thermally-weakened arc that formed along the western margin of North and South America. Late Triassic to Middle Jurassic early-stage low-lying extensional continental arc basins of the SW US were floored by supracrustal rocks, showing that uplift did not precede magmatism, and they subsided deeply at high rates, locally below sea level. These basins formed a sink, rather than a barrier, for craton-derived sediment. They were characterized by abundant, widespread, large-volume silicic calderas, whose explosive eruptions buried fault scarps and horst blocks, resulting in a paucity of epiclastic debris in the basins. In Late Jurassic time, early-stage low-lying transtensional continental arc basins formed along the axis of the early-stage low-lying extensional continental arc basins, due to the opening of the Gulf of Mexico, which resulted in oblique subduction. Basins were downdropped at releasing bends or stepovers, in close proximity to uplifts along restraining bends or stepovers (referred to as "porpoising"), with coeval reverse and normal faults. Uplift events produced numerous large-scale unconformities, in the form of deep paleocanyons and huge landslide scars, while giant slide blocks of "cannibalized" basin fill accumulated in subsiding areas. Erosion of pop-up structures yielded abundant, coarse-grained epiclastic sediment. Silicic giant continental calderas continued to form in this setting, but they were restricted to symmetrical basins at releasing stepovers.In Cretaceous to Paleocene time, the arc migrated eastward under a contractional strain regime, due to shallowing of the progressively younger subducting slab. This produced a broad, high plateau, referred to as the "Nevadaplano" because of its similarity to the modern Altiplano of the Andean arc. Then, in Eocene to Miocene time, volcanism migrated westward due to slab rollback or steepening, producing latestage high-standing extensional continental arc basins. Late-stage extensional continental arc basins were similar to early-stage extensional arc basins in having "supervolcano" silicic caldera fields, but they were restricted to areas of thickest crust (along the crest of the Nevadaplano), rather than forming everywhere in the arc. Late-stage basins differed markedly from early-stage basins by forming ...

show abstract

“…The Middle Jurassic arc magmatism ended when the NW-SE, fault-bounded basins in the region of Sonora and Arizona formed contemporaneously with the opening of the Gulf of Mexico. Opening of the basins may be related to opening of the Gulf of Mexico, or they may be related either to rollback of the subducting slab (Lawton and McMillan, 1999;Dickinson and Lawton, 2001) associated with the Jurassic arc, or to strike-slip faulting related to the Mojave-Sonora megashear (Anderson et al, 2005;Busby et al, 2005). A sparse and younger magmatism that is mostly present in the Papago domain falls in the age range from 160 to 145 Ma and consists of alkaline volcanic and plutonic rocks and interbedded sedimentary strata (Tosdal et al, 1989).…”

Section: Introductionmentioning

confidence: 99%