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Izee

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Journal Article
Journal: Geology
Published: 01 August 1992
Geology (1992) 20 (8): 729-732.
...James D.L. White; David L. White; Tracy Vallier; George D. Stanley, Jr.; Sidney R. Ash Abstract Middle Jurassic strata atop the Wallowa terrane in northeastern Oregon link the Wallowa, Izee, and Olds Ferry terranes as related elements of a single long-lived and complex oceanic feature, the Blue...
Journal Article
Published: 01 December 1980
Canadian Journal of Earth Sciences (1980) 17 (12): 1603-1608.
... zonal scheme based on ammonites and related to the standard schemes of North America and northwest Europe is applied to the interdigitating units deposited in the Izee basin. Marked diachronism is evident so that the depositional model of the Basey and Silvies Members synchronously providing sediment...
Journal Article
Journal: GSA Bulletin
Published: 01 October 1964
GSA Bulletin (1964) 75 (10): 1037-1044.
...WILLIAM R DICKINSON; LAURENCE W VIGRASS Abstract Marine strata of Permian, Late Triassic, Jurassic, and Late Cretaceous age have an aggregate thickness of 35,000–40,000 feet in the Suplee-Izee district of central Oregon. This deformed but unmetamorphosed eugeosynclinal sequence is composed largely...
Series: GSA Field Guide
Published: 01 January 2009
DOI: 10.1130/2009.fld015(09)
EISBN: 9780813756158
... Abstract This field trip guide describes a two-day excursion through Mesozoic accreted terranes of the Blue Mountains Province in northeastern Oregon. Day 1 is focused on sedimentary rocks of the Izee terrane. These deposits are divided into two unconformity-bounded megasequences, MS-1 and MS-2...
Image
Generalized geologic map of the <b>Izee</b> and Grindstone terranes showing the su...
Published: 01 September 2013
Figure 2 Generalized geologic map of the Izee and Grindstone terranes showing the surrounding mélange areas (modified from Dickinson and Thayer, 1978 ). The Frenchy Butte mélange area is included within the Baker terrane, the Grindstone-Twelvemile mélange area is considered as part
Series: GSA Special Papers
Published: 01 January 2006
DOI: 10.1130/2006.2410(02)
... an accurate chronostratigraphic framework. Faunal paleolatitudinal data, paleomagnetic data (where available), and microfacies analysis have been utilized in the tectonostratigraphic interpretations. Four terranes/subterranes are analyzed herein: (1) the Izee terrane (Blue Mountains, northeastern Oregon...
FIGURES | View All (14)
Journal Article
Journal: GSA Bulletin
Published: 01 October 1991
GSA Bulletin (1991) 103 (10): 1280-1296.
... indicate deposition in proximity to an island-arc system near the North American craton. The Grindstone terrane deposits are unconformably overlain by Upper Triassic to Middle Jurassic sequences of the Izee terrane. Although lithologic and faunal differences indicate that the Grindstone and Izee terranes...
Series: GSA Special Papers
Published: 28 December 2018
DOI: 10.1130/2018.2540(10)
EISBN: 9780813795409
... of the Wallowa–Seven Devils arc that indicate ~60° clockwise rotation of the Blue Mountains. This study reports new paleomagnetic data from additional locations of these Late Jurassic–Early Cretaceous plutonic rocks, as well as Jurassic sedimentary rocks of the Suplee-Izee area. Samples from three sites from...
Journal Article
Journal: Lithosphere
Published: 01 April 2017
Lithosphere (2017) 9 (2): 265-282.
... separates the Izee and Baker terranes. High-precision U-Pb zircon ages indicate 129.4–123.8 Ma crystallization ages and exhibit a north-northeast–younging trend of the magmatism. The 40 Ar/ 39 Ar analyses on biotite and hornblende indicate very rapid (<1 m.y.) cooling below biotite closure temperature...
FIGURES | View All (12)
Series: GSA Field Guide
Published: 01 January 2016
DOI: 10.1130/2016.0041(07)
EISBN: 9780813756417
... Abstract The Wallowa terrane is one of five pre-Cenozoic terranes in the Blue Mountains province of Oregon, Idaho, and Washington. The other four terranes are Baker, Grindstone, Olds Ferry, and Izee. The Wallowa terrane includes plutonic, volcanic, and sedimentary rocks that are as old...
FIGURES | View All (22)
Journal Article
Published: 01 September 2013
Journal of Paleontology (2013) 87 (5): 909-921.
...Figure 2 Generalized geologic map of the Izee and Grindstone terranes showing the surrounding mélange areas (modified from Dickinson and Thayer, 1978 ). The Frenchy Butte mélange area is included within the Baker terrane, the Grindstone-Twelvemile mélange area is considered as part...
FIGURES | View All (8)
Journal Article
Journal: GSA Bulletin
Published: 01 September 2011
GSA Bulletin (2011) 123 (9-10): 1939-1965.
... of the “Izee” and Olds Ferry terranes of the Blue Mountains Province, northeastern Oregon. Triassic sediments were likely derived from the Baker terrane offshore accretionary subduction complex and are dominated by Late Archean (ca. 2.7–2.5 Ga), Late Paleoproterozoic (ca. 2.2–1.6 Ga), and Paleozoic (ca. 380...
FIGURES | View All (15)
Journal Article
Journal: GSA Bulletin
Published: 01 September 2011
GSA Bulletin (2011) 123 (9-10): 2083-2111.
... widespread Late Jurassic orogenesis in the Blue Mountains Province. Folding and faulting associated with contractional deformation are primarily localized along terrane boundaries (e.g., Baker-Wallowa and Baker–Izee–Olds Ferry boundaries) and within the composite Baker oceanic mélange terrane (e.g., Bourne...
FIGURES | View All (15)
Series: GSA Field Guide
Published: 01 January 2011
DOI: 10.1130/2011.0021(03)
EISBN: 9780813756219
... (SG—Swakane Gneiss; W-SD—Wallowa–Seven Devils); Km—accreted western Klamath Mountains arcs; Qu— Quesnellia and related terranes (IZ—Izee forearc basin; EK—eastern Klamath Mountains terrane; OF—Olds Ferry terrane); St—Stikinia (CR-H—Cascade River–Holden belt). Accretionary prism/subduction complex...
FIGURES | View All (14)
Series: GSA Special Papers
Published: 01 July 2008
DOI: 10.1130/2008.442(13)
... The Late Triassic (Carnian-Norian) time interval is well represented by strata in the Wallowa and Baker terranes and in the Izee-Suplee area of central Oregon. Strata of the Olds Ferry terrane, by contrast, have received little attention beyond field mapping and reconnaissance...
FIGURES | View All (12)
Image
Isotopic and model lithospheric cross sections across major terrane boundar...
Published: 01 April 2017
corresponds to age and is the same as in Figure 13 . (D) Lithospheric model of Leeman et al. (1992) . (E) New lithospheric model involving three distinct lithospheric columns. WISZ—western Idaho shear zone; IZ-OF—Izee–Olds Ferry; WA—Wallowa; PMZ—partial melting zone; BA-IZ—Baker-Izee terrane.
Image
Figure 10. Age relationships of structures in the Blue Mountains province o...
Published: 01 May 2005
Figure 10. Age relationships of structures in the Blue Mountains province of northeast Oregon (Wallowa, Baker, Izee, and Olds Ferry terranes) and Salmon River belt assemblages of west-central Idaho. Note the absence of Middle Jurassic deformation in the Wallowa terrane.
Image
FIGURE 3 —Bivalve-constructed buildups of the Early Jurassic. (A) A  Lithio...
in > PALAIOS
Published: 01 February 2004
FIGURE 3 —Bivalve-constructed buildups of the Early Jurassic. (A) A Lithiotis problematica buildup near Suplee-Izee, Oregon. (B) Assemsouk, an Early Jurassic reef from the Eastern High Atlas; a Cochlearites loppianus buildup is located at the top meter of the outcrop, indicated by dashed lines
Image
Chondrite-normalized (values of  Taylor and McLennan 1985 ) REE diagram sho...
Published: 01 December 2008
Figure 8 Chondrite-normalized (values of Taylor and McLennan 1985 ) REE diagram showing values for Olds Ferry volcanic and plutonic rocks (solid black lines; data from Vallier 1995 ) vs. megasequence-1 deposits of the Izee–Suplee area (gray box; Late Triassic and Early Jurassic). REE
Image
FIGURE 8 —Photographs of three styles of “ Lithiotis ” bivalve facies aggre...
in > PALAIOS
Published: 01 February 2004
FIGURE 8 —Photographs of three styles of “ Lithiotis ” bivalve facies aggregations. (A) A Lithiotis problematica bouquet at the base of a buildup at Jackass Ranch, Suplee-Izee, Oregon. (B) A bedding plane view of Cochlearites loppianus (adapical or dorsal region extends into the readers field