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Wapshilla Ridge Member

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Sulfur concentrations in <b>Wapshilla</b> <b>Ridge</b> <b>Member</b> and Meyer <b>Ridge</b> <b>Member</b> (Gra...
in > Geology
Published: 02 October 2017
Figure 4. Sulfur concentrations in Wapshilla Ridge Member and Meyer Ridge Member (Grande Ronde Basalt, Columbia River Basalt Group, western USA) melt inclusions (MIs) and host lapilli glasses. A: MgO versus S. B: FeO total versus S. Gray lines in B are range of sulfur contents predicted by model
Journal Article
Journal: Geology
Published: 02 October 2017
Geology (2017) 45 (11): 1043-1046.
...Figure 4. Sulfur concentrations in Wapshilla Ridge Member and Meyer Ridge Member (Grande Ronde Basalt, Columbia River Basalt Group, western USA) melt inclusions (MIs) and host lapilli glasses. A: MgO versus S. B: FeO total versus S. Gray lines in B are range of sulfur contents predicted by model...
FIGURES | View All (4)
Series: GSA Special Papers
Published: 01 August 2013
DOI: 10.1130/2013.2497(15)
... (Basalt of Museum 2 and Museum 1; Basalt of Stember Creek; and upper and lower flows of the Basalt of McCoy Canyon), Ortley member (informal), Grouse Creek member (informal “Meeks Table” flow), and Wapshilla Ridge Member. All these Grande Ronde Basalt flows display similar intraflow structures (cooling...
Series: GSA Special Papers
Published: 01 August 2013
DOI: 10.1130/2013.2497(05)
... of the Wapshilla Ridge Member. Eruption and emplacement rates for the flows are controversial, but available data collected from the field suggest that many of the flows could have been emplaced in a few years to perhaps a decade. ...
Journal Article
Journal: Geosphere
Published: 02 July 2019
Geosphere (2019) 15 (4): 1448-1458.
... to the Stember Creek and Spokane Falls types. The Airway Heights and California Creek lavas, however, could be significantly older than SB lavas because their lower possible stratigraphic position is poorly constrained. Other high-Mg lavas (Slack Canyon and Indian Ridge GRB members) having limited extents within...
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Journal Article
Journal: Geosphere
Published: 08 December 2017
Geosphere (2017) 14 (1): 286-303.
... higher MgO and compatible trace elements (e.g., Cr). However, a TiO 2 threshold was adopted to distinguish the Grouse Creek and Wapshilla Ridge members among a compositional continuum among low-Mg R 2 flows ( Reidel and Tolan, 2013 ). It is evident from the current chemostratigraphic criteria...
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Image
Composition of Hunter Creek Basalt and Birch Creek formation lavas in compa...
in > Geosphere
Published: 20 December 2018
Figure 14. Composition of Hunter Creek Basalt and Birch Creek formation lavas in comparison to units of the N2 magnetostratigraphic unit of the Grande Ronde Basalt and R2 magnetostratigraphic unit of the Wapshilla Ridge Member, after Reidel and Tolan (2013) .
Image
Backscattered electron image of sulfur-saturated melt inclusion hosted with...
in > Geology
Published: 02 October 2017
feldspar; Cpx—pyroxene; Py—pyrrhotite (sulfide phase); mi—melt inclusion; gl—host glass. Wapshilla Ridge Member (Grande Ronde Basalt, Columbia River Basalt Group) sample 129FKDG_5_28.
Series: GSA Special Papers
Published: 07 February 2019
DOI: 10.1130/2018.2538(01)
EISBN: 9780813795386
... reactions in tonalite adjacent to the Maxwell Lake dike, a likely feeder to the Wapshilla Ridge Member ( Fig. 1 ), the most voluminous of all Grande Ronde Basalt (Columbia River Basalt Group) eruptions, consisting of more than 41,000 km 3 ( Reidel et al., 1989a ; Reidel and Tolan, 2013b ). Petcovic...
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Image
Photographs of Grande Ronde Basalt lava flows within the Columbia Basin sho...
in > Geosphere
Published: 02 July 2019
Ridge Member. (D) Light-colored corestone within concentric alteration rinds in the basalt of Stember Creek (as mapped by Hooper and Gillespie, 1996 ), southeastern Washington. Sample is from a road-cut exposure along the Alpowa Grade (U.S. Route 12), ∼25 km west of Clarkston, Washington. Coin
Series: GSA Field Guide
Published: 01 January 2009
DOI: 10.1130/2009.fld015(32)
EISBN: 9780813756158
... compositional types (1 higher P2O5, 2 lower P2O5) Wapshilla Ridge member R 2 3 or more flows Downey Gulch member N 1 Flood basalts of the Miocene Columbia River Basalt Group (CRBG) are among the most voluminous and far-traveled lava flows on earth (Fig. 1 ; Tolan et al., 1989 ; Tolan et al...
Series: GSA Field Guide
Published: 01 January 2016
DOI: 10.1130/2016.0041(04)
EISBN: 9780813756417
... in tonalite adjacent to the Maxwell Lake dike, a likely feeder to Wapshilla Ridge Member flows. These flows constitute the largest of all Grande Ronde Basalt members ( Reidel et al., 1989a ; Reidel and Tolan, 2013a ), having an emplaced volume estimated at ~37,000 km 3 and a system of dikes estimated...
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Journal Article
Journal: Geology
Published: 01 February 2002
Geology (2002) 30 (2): 179-182.
...) the Goose Island flow (∼20 km 3 ) from the Ice Harbor Member, erupted ca. 8.5 Ma, (2) the voluminous Gingko flow (∼1600 km 3 ) from the Frenchman Springs Member, erupted between 15.6 and 15.3 Ma, and (3) the Wapshilla Ridge Member (∼2000 km 3 ), erupted at 15.6 Ma. Their chemical compositions...
FIGURES
Series: GSA Field Guide
Published: 01 January 2009
DOI: 10.1130/2009.fld015(28)
EISBN: 9780813756158
... Creek; Tig—Basalt of Goose Island, Ice Harbor Member; Tim—Basalt of Martindale, Ice Harbor Member; Tib— Basalt of Basin City, Ice Harbor Member; Tb—Buford Member; Tem—Elephant Mountain Member; Tn—Basalt of Eden; Tp— Pomona Member; Te—Esquatzel Member; Tws—Basalt of Slippery Creek, Weissenfels Ridge...
Journal Article
Journal: Geosphere
Published: 20 December 2018
Geosphere (2018) 15 (1): 60-84.
...Figure 14. Composition of Hunter Creek Basalt and Birch Creek formation lavas in comparison to units of the N2 magnetostratigraphic unit of the Grande Ronde Basalt and R2 magnetostratigraphic unit of the Wapshilla Ridge Member, after Reidel and Tolan (2013) . ...
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Series: GSA Field Guide
Published: 01 January 2009
DOI: 10.1130/2009.fld015(29)
EISBN: 9780813756158
... Mountains Basalt) overlying sediments of the Rattlesnake Ridge Member of the Ellensburg Formation. 7.8 Roadcut exposes the basalt of Martindale, Ice Harbor Member (Saddle Mountains Basalt). The geology of an eruptive vent for basalt of Martindale at Ice Harbor Dam is described at Stop 2 (Day 1...
Series: GSA Field Guide
Published: 01 January 2009
DOI: 10.1130/2009.fld015(31)
EISBN: 9780813756158
...) and Sentinel Bluffs (Grande Ronde) units. The hill in the background is Cooks Butte, a volcanic vent of the Boring Lavas of Pliocene to Pleistocene age. South at Wanker's Corner, stratigraphy in well CLAC 115 indicates a Sand Hollow flow over the Wapshilla Ridge Member of the Grande Ronde Basalt, indicating...
Journal Article
Journal: Geosphere
Published: 01 April 2015
Geosphere (2015) 11 (2): 226-235.
... lavas of the upper Grande Ronde Basalt, respectively ( Reidel and Tolan, 2013 ; Barry et al., 2013 ). These occur on the southern side of the DITEC. In this regard, if Hunter Creek Basalt is correlative to Wapshilla Ridge member of the Grande Ronde Basalt ( Reidel and Tolan, 2013 ), this would require...
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