Sandstone diagenesis, reservoir potential, and sequence stratigraphy of the Eocene Tyee Basin, Oregon

Ryu, In‐Chang; Niem, Alan R.

doi:10.2110/jsr.69.384

Cited by 25 publications

(21 citation statements)

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“…Maximum facies (and compositional) variability is likely to be observed within the lowstand systems tract (LST) and highstand systems tract (HST), where conditions of sea-level stillstand promote extensive delta and coastal progradation, with marked activation of autogenic processes. Remarkable petrofacies changes within HST have been reported by Ryu and Niem (1999) and Marchesini et al (2000). On the other hand, minor compositional change is expected within facies tracts of the falling-stage systems tract (FST) and transgressive systems tract (TST).…”

Section: Compositional Change Across Facies Tract Boundarysupporting

confidence: 53%

“…The development of basin-wide unconformities due to active tectonics is commonly accompanied by deposition of sand units that differ markedly in composition, and different petrofacies may permit the characterization of each sequence in terms of both clastic constituents and provenance (Arribas et al, 2003). Compositional changes at sequence-bounding unconformities generally mark abrupt paleodrainage reorganization in response to tectonic uplift (Ryu and Niem, 1999;Roca and Nadon, 2007;Vezzoli and Garzanti, 2009). In terms of sequence stratigraphy, changes in arenite composition at sequence boundaries are likely to be recorded (i) at the basin margin, by sharp petrofacies changes within fluvial and transgressive estuarine to littoral and shelfal sand bodies directly overlying the subaerial unconformity, (ii) in deep-water settings, at the base of thick successions of falling-stage turbidites (correlative conformity), in association with diagnostic changes in lithofacies patterns (e.g., abrupt increase in the sandstone to shale ratio).…”

Section: Compositional Change Across Sequence Boundarymentioning

confidence: 99%

“…Patterns of arenite composition may be strongly affected by changes in sea level, and thus record systematic variations within depositional sequences, from a systems tract to another (Ryu and Niem, 1999;Marchesini et al, 2000). This implies that laterally extensive petrofacies changes are not expected uniquely as markers of the sequence boundary.…”

Section: Compositional Change Across Systems Tract Boundarymentioning

confidence: 99%

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Sand composition changes across key boundaries of siliciclastic and hybrid depositional sequences

Amorosi

Zuffa

2011

Sedimentary Geology

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Section: Compositional Change Across Facies Tract Boundarysupporting

confidence: 53%

Section: Compositional Change Across Sequence Boundarymentioning

confidence: 99%

Section: Compositional Change Across Systems Tract Boundarymentioning

confidence: 99%

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Sand composition changes across key boundaries of siliciclastic and hybrid depositional sequences

Amorosi

Zuffa

2011

Sedimentary Geology

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“…It is a turbidite sequence of alternating sands and silts that were deposited in the middle Eocene (Snavely et al, 1964). Provenance of the Tyee Formation likely includes a combination of Klamath Mountains and the Idaho Batholith sources (Heller et al, 1985;Heller and Ryberg, 1983;Ryu and Niem, 1999). Along with Tt in the SCR, older Tertiary sediments are present (Tmsm, Tmsc, Tmss).…”

Section: Introductionmentioning

confidence: 99%

The effects of rock uplift and rock resistance on river morphology in a subduction zone forearc, Oregon, USA

VanLaningham

Meigs

Goldfinger

2006

Earth Surf Processes Landf

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Relationships between riverbed morphology, concavity, rock type and rock uplift rate are examined to independently unravel the contribution of along-strike variations in lithology and rates of vertical deformation to the topographic relief of the Oregon coastal mountains. Lithologic control on river profile form is reflected by convexities and knickpoints in a number of longitudinal profiles and by general trends of concavity as a function of lithology. Volcanic and sedimentary rocks are the principal rock types underlying the northern Oregon Coast Ranges (between 46°30′ ′ ′ − − − −1 , to subsidence (< < < < <0 mm a − − − − −1 ). These observations are consistent with models of transient river response to a decrease in uplift rate. Conversely, the rivers between 44° and 43°N have similar concavities and flow on the same mapped bedrock unit as the central region, but have bedrock channels and irregular longitudinal profiles, suggesting the river profiles reflect a transient response to an increase in uplift rate. If changes in rock uplift rate explain the differences in river profile form and morphology, it is unlikely that rock uplift and erosion are in steady state in the Oregon coastal mountains. sediment supply effects on fluvial erosion can exert controls on longitudinal profiles as well (Sklar and Dietrich, 2001). Moreover, longitudinal profiles not only respond to climate by modulating the hydrologic and erosional conditions, but also show effects driven by orographic precipitation (Roe et al., 2002). Longitudinal profile development is also complicated by variable rock strength. Gilbert (1877) first suggested that lithology was of fundamental importance in river erosion and longitudinal profile form. Stock and Montgomery (1999) argued that lithologic controls produce large variability in river long-profile development. Duvall et al. (2004) showed that lithology is important in determining the concavity of river profiles. Although long-profiles are the consequence of complex interactions between a range of variables, they are markers for understanding crustal processes in the topographic landscape.The aim of this study is to distinguish between rock resistance and rock uplift influences on river profile and topographic form in the terrestrial forearc of an active subduction zone. A simple approach is taken here to assess the relationship between river morphology, rock resistance and tectonic rock uplift in the coastal mountains of Oregon between 42° and 46°N. Forty-one rivers flowing generally from the drainage divide westward to the Pacific Ocean on the windward, western flank of the range were selected to minimize orographic effects. To a first order, therefore, the variables controlling river profile form, and hence the topographic relief of the range, are rock uplift rate and lithologic variation, all of which vary systematically along-strike. Two uplift rate datasets exist for the west flank of the Coast Range. We invoke established slope-area analyses (Hurtrez et al., 1999;Snyder et al., 2000;Kirby an...

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“…For the massive Tyee sandstones, porosity and permeabilities average 10.8% and 2.72x10 -15 m 2 (2.76 md), respectively (Ryu and Niem, 1999).…”

Section: Figure 14 Sediment Thickness In Basins Of Coastal Ranges Ofmentioning

confidence: 98%

Preliminary Geologic Characterization of West Coast States for Geologic Sequestration

Myer¹

2005

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Characterization of geological sinks for sequestration of CO 2 in California, Nevada, Oregon, and Washington was carried out as part of Phase I of the West Coast Regional Carbon Sequestration Partnership (WESTCARB) project. Results show that there are geologic storage opportunities in the region within each of the following major technology areas: saline formations, oil and gas reservoirs, and coal beds. The work focused on sedimentary basins as the initial most-promising targets for geologic sequestration. Geographical Information System (GIS) layers showing sedimentary basins and oil, gas, and coal fields in those basins were developed. The GIS layers were attributed with information on the subsurface, including sediment thickness, presence and depth of porous and permeable sandstones, and, where available, reservoir properties.

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Sandstone diagenesis, reservoir potential, and sequence stratigraphy of the Eocene Tyee Basin, Oregon

Cited by 25 publications

References 0 publications

Sand composition changes across key boundaries of siliciclastic and hybrid depositional sequences

Sand composition changes across key boundaries of siliciclastic and hybrid depositional sequences

The effects of rock uplift and rock resistance on river morphology in a subduction zone forearc, Oregon, USA

Preliminary Geologic Characterization of West Coast States for Geologic Sequestration

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