Architecture of a 1.38–1.34 Ga granite–rhyolite complex as revealed by geochronology and isotopic and elemental geochemistry of subsurface samples from west Texas, USA

Barnes, Melanie A.; Anthony, Elizabeth Y.; Williams, Ian S.; Asquith, George B.

doi:10.1016/s0301-9268(02)00116-x

Cited by 46 publications

(27 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The second period of magmatism exhibited in the Arbuckle Mountains is the emplacement of granite plutons including the Troy and Tishomingo Granites between 1,370 and 1,360 Ma. Other igneous plutons occurring at approximately this same time include the main stage granite in the Texas Panhandle region (Barnes et al 2002) and possibly the Graniteville Granite in the St. Francois Mountains (Van Schmus et al 1996) although the error for the latter is fairly large at ± 25 Ma.…”

Section: Discussionmentioning

confidence: 92%

“…The first pulse occurred~1,390 Ma with the formation of the Burch Granodiorite and Blue River Gneiss. Other units within the southern midcontinent that formed around this time included the Munger Granite Porphyry (Thomas et al 1984) in the St. Francois Mountains and the first pulse of granitic magmatism within the Texas Panhandle region of the SGR province as quartz monzonite (Barnes et al 2002). The second period of magmatism exhibited in the Arbuckle Mountains is the emplacement of granite plutons including the Troy and Tishomingo Granites between 1,370 and 1,360 Ma.…”

Section: Discussionmentioning

confidence: 95%

“…Drill hole penetrations into the Precambrian basement have indicated granite plutons of this age range in northeast Kansas , southeast Missouri and northern Arkansas (Van Schmus et al 1996), and as late-stage quartzsyenite in the Texas Panhandle region (Barnes et al 2002). Most of the crystallization ages have small error bars of ± 6 to 12 Ma.…”

Section: Discussionmentioning

confidence: 98%

“…The SGR province has been mapped in the subsurface in parts of Arkansas, Kansas, Missouri, New Mexico, Oklahoma, and Texas. Extensive studies of the Precambrian basement in the subsurface of the Texas Panhandle region have identified three separate magmatic episodes at~1,380,~1,360, and~1,340 Ma (Barnes et al 2002).…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Isotopic connections between basement rocks exposed in the St. Francois Mountains and the Arbuckle Mountains, southern mid-continent, North America

Rohs

Schmus

2006

Int J Earth Sci (Geol Rundsch)

View full text Add to dashboard Cite

Two distinct crustal provinces have been identified in the southern mid-continent based on U-Pb crystallization ages. Both contain large volumes of undeformed granite and rhyolite, with minor amounts of metamorphic rock and mafic intrusions. The Eastern Granite-Rhyolite province is characterized by felsic rocks with crystallization ages of 1,470 ± 30 Ma and exposures are restricted to the St. Francois Mountains in southeastern Missouri. Similarly, the Southern Granite-Rhyolite (SGR) province is characterized by felsic units with ages of 1,370 ± 30 Ma with primary exposures in the eastern Arbuckle Mountains of southern Oklahoma. Within the SGR province three magmatic pulses can be identified starting at 1,400, 1,370, and 1,340 Ma. Although the crystallization ages are different, the Sm-Nd isotopic signatures are similar for the units exposed in these areas as well as the buried basement in between. Depleted mantle model ages for rocks within the Arbuckle Mountains range from 1,530 to 1,430 Ma with e Nd (t) values of +3.2 to +4.1 while units of the St. Francois Mountains range from 1,550 to 1,430 Ma and +4.5 to +4.7. Comparison of Sm-Nd isotopic data also indicate similarities between the 147 Sm/ 144 Nd and 143 Nd/ 144 Nd ratios for the rock units in these areas suggesting a common source.

show abstract

Section: Discussionmentioning

confidence: 92%

Section: Discussionmentioning

confidence: 95%

Section: Discussionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Isotopic connections between basement rocks exposed in the St. Francois Mountains and the Arbuckle Mountains, southern mid-continent, North America

Rohs

Schmus

2006

Int J Earth Sci (Geol Rundsch)

View full text Add to dashboard Cite

show abstract

“…La mise en place des intrusions alcalines peut être associée à des failles secondaires aux failles majeures de décrochement (Ronald et ah, 1993), à des cycles de convergence suivie d'une extension (Windley, 1993), ou au diachronisme (Barnes et al, 2002). Leur association avec les conglomérats et les failles et par conséquent avec le soulèvement suggère une mise en place lors des dernières phases orogéniques ou immédiatement après que la croûte épaissie soit devenue stable comme l'ont observés Smith et al (1980) à Blake Lake.…”

Section: 24-les Intrusions Porphyriquesunclassified

Caractéristiques sédimentologiques, volcanologiques et structurales du bassin de Granada dans la ceinture de roches vertes de l'Abitibi (Québec) /

Diop¹

2011

View full text Add to dashboard Cite

The Granada Basin, correspond to the stratigraphie unit known as the Granada Formation. This unit lies in the southernmost part of the Southern Volcanic Zone of the greenstone dominated Abitibi Subprovince in Quebec.Faciès analysis in the Granada Basin has identified clastic and volcaniclastic rocks deposited in an environment evolving from relatively deep marine to fluvial. The earliest sediments were mainly turbidites (faciès la and lb) deposited in extensional sub-basins. These sediments were overlain by a regressive sequence that evolved from shallow marine wave base dominated sediments (faciès 2a) to coastal deposits (faciès 2b). These deposits represent the transition between marine and continental depositional environments. The transition zone is marked by deposits of sandstoneargillites-stratified pebble conglomerate (faciès 2b) transported by waves and tides between the subtidal and intertidal zone. Faciès 3a and 3b of the felsic volcaniclastic lithofacies are interbedded with faciès la, lb and 2a.Deposits of the Granada Basin are transitional faciès separated by intra-basin unconformities, which are characteristic of sedimentary basins formed along fault margins. The volcano-sedimentary deposits of the Granada Basin have characteristics of sedimentation influenced by tectonisme such as: i) local and basinwide lateral and vertical faciès variations; ii) alternating fining and coarsening upwards sequences; iii) high rate of accumulation of sediments; iv) some conglomerate boulders are over 1 m in size and the thickness of conglomerate deposits; v) interdigitation of conglomerates and sandstones that denotes a progradation; vi) intra-basin unconformities; vii) the local source of conglomerates; and viii) associated alkaline magmatism. Tectonism would be ongoing throughout the development of the basin which would have induced several phases of source renewal areas for the sediments coupled with intra-basin unconformities. The earliest formed sedimentary deposits of the Granada Basin were affected by uplift and subsequently eroded and recycled into later basin fill along intra-basin unconformities. Gradually as the basin filled the sedimentary deposits became less and less shallower which is a characteristic of piggyback-type basins. The decrease in the depth is a consequence of an increase in topography due to repeated uplift along faults.Sedimentary rocks of the Granada Basin were intruded by alkalic mature volcanic arc-type sills, stocks and porphyritic dikes. These intrusive rocks are similar to Timiskaming-type porphyry intrusions and volcanic rocks found in the Kirkland Lake area of Ontario.The structural style of the Granada Basin, consisting of overturned southward verging tight to isoclinal folds, is characteristic of thrust basins. Two major east-west trending synclinal axial traces are distinguishable and their juxtaposition in a back to back relationship is compatible with there being an unconformity between them. This unconformity is further demonstrated by the presence of sandstone cla...

show abstract

Hydrogeologic controls on groundwater recharge and salinization: a geochemical analysis of the northern Hueco Bolson aquifer, Texas, USA

et al. 2007

View full text Add to dashboard Cite

Architecture of a 1.38–1.34 Ga granite–rhyolite complex as revealed by geochronology and isotopic and elemental geochemistry of subsurface samples from west Texas, USA

Cited by 46 publications

References 39 publications

Isotopic connections between basement rocks exposed in the St. Francois Mountains and the Arbuckle Mountains, southern mid-continent, North America

Isotopic connections between basement rocks exposed in the St. Francois Mountains and the Arbuckle Mountains, southern mid-continent, North America

Caractéristiques sédimentologiques, volcanologiques et structurales du bassin de Granada dans la ceinture de roches vertes de l'Abitibi (Québec) /

Hydrogeologic controls on groundwater recharge and salinization: a geochemical analysis of the northern Hueco Bolson aquifer, Texas, USA

Contact Info

Product

Resources

About