Flow directions in Columbia River Basalt flows and paleocurrents of interbedded sedimentary rocks, South-Central Washington

Schmincke, Hans‐Ulrich

doi:10.1007/bf01848776

Cited by 28 publications

(15 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The land-sea transition and the interface between submarine and subaerial lavas Land-sea interfaces and ancient sea levels can be documented in single compound flows where the lava initially advanced into shallow water while later flow units of the same eruptive phase travelled over wet or dry land produced by the initial flow units (Fuller 1931(Fuller , 1934Schmincke 1967, and Fig. 3 therein).…”

Section: Discussionmentioning

confidence: 97%

Evolution of the northwestern Iblean Mountains, Sicily: uplift, Plicocene/Pleistocene sea-level changes, paleoenvironment, and volcanism

Schmincke¹,

Behncke²,

Grasso³

et al. 1997

Geologische Rundschau

View full text Add to dashboard Cite

The Late Miocene to Pleistocene evolution of the northwestern Iblean plateau (Sicily) is marked by a complex interplay of subaerial and submarine volcanism, subsidence and uplift, eustatic sea-level changes, and shallow-water carbonate and clay sedimentation. Volcanic activity occurred in distinct phases, differing drastically in volume, chemical composition, eruptive and depositional sites, and eruptive mechanisms. Six of the newly defined formations in the northwestern Iblean plateau are either entirely volcanic or contain significant amounts of volcanics. The eastern part of a shallow marine basin was filled completely by Late Pliocene tholeiitic lava flows (Militello Formation) that had advanced subaerially from the south-southeast. Lava deltas advanced southwestward on top of earlier pillow breccia debris flow deposits intertongued with soft Trubi marls and chalks. True submarine eruptions (Monte Caliella Formation) simultaneously produced densely packed pillow piles up to 250 m thick. Inferred water depths based on volcanologic and paleoecologic criteria of interbedded and overlying calcarenites agree well.Subsequent alkalic, more explosive Pleistocene volcanic eruptions (Poggio Vina Formation) changed from initially submarine to late subaerial indicating growth of edifices above sea level, sea-level rise, or land Subsidence by ca. 50 m. They and the latest Militello volcanics are interlayed with minor shallow-water calcarenites. The Poggio Vina volcanics were submerged during a second sea-level rise amounting to up to 100 m. The sea was generally shallow, i.e., (100 m deep, throughout most of the Late Pliocene and early Pleistocene. The Poggio Vina volcanism took place prior to the Emilian transgression. The sea-level rise might represent a continuation of the subsidence trend that caused the Lower Pliocene Trubi marine basin. Subaerial conditions were reached twice in the approximate time interval 1.9-1.6 Ma during phases of voluminous volcanism that outpaced subsidence. Uplift of approximately 600 m (Palagonia) to 950 m (Monte Lauro) occurred subsequent to emplacement of the Pleistocene alkalic volcanics. Bioclastic carbonates deposited concurrently with uplift drape a major fault scarp east of Palagonia with uplift rates in excess of 0.5 mm/a, provided most uplift occurred during ca. 1 Ma. Basinning continued beneath the half graben of the present Piana di Catania where volcanics several hundreds of meters thick -at least some of them alkalic in composition -occur at a depth of approximately 500-1500 m below the present surface. Quaternary uplift of the northwestern Iblean plateau may have been due to a major phase of underplating or rise of partially melted mantle. Composition of the volcanic rocks, total volume, and mass eruptive rates are well-correlated. The volumetrically very minor highly mafic Messinian nephelinites may have formed in response to Messinian lithosphere unloading following draining of the Mediterranean resulting in very low-degree partial melting. The nephelinitic to basanitic Pogg...

show abstract

Section: Discussionmentioning

confidence: 97%

Evolution of the northwestern Iblean Mountains, Sicily: uplift, Plicocene/Pleistocene sea-level changes, paleoenvironment, and volcanism

Schmincke¹,

Behncke²,

Grasso³

et al. 1997

Geologische Rundschau

View full text Add to dashboard Cite

show abstract

“…The first detailed studies of this region were undertaken in the 1950s and 1960s by Waters (1955Waters ( , 1961, Mackin (1961), their students, and colleagues (e.g., Laval, 1956;Schmincke, 1964Schmincke, , 1967Grolier, 1965;Grolier andBingham, 1971, 1978;and Bingham and others, 1970). Since then there have been numerous other studies, many initiated due to the construction of nuclear powerplants and nuclear waste-management activities on the Hanford Site in central Washington.…”

Section: Introductionmentioning

confidence: 99%

The geologic evolution of the central Columbia Plateau

Reidel

Fecht

Hagood

et al. 1989

Geological Society of America Special Papers

View full text Add to dashboard Cite

Tectonic development and evolution of the central Columbia Plateau since middleMiocene time is a product of dynamic interplay among (1) the eruption and emplacement of the Columbia River Basalt Group (CRBG), (2) the subsidence of the area encompassing the Yakima fold belt subprovince, (3) the growth of the Yakima folds, and (4) the influence of regional structures transecting the fold belt, specifically the Hog Ranch-Naneum Ridge anticline and the Cle Elum-Wallula disturbed zone.Subsidence of the Yakima fold belt subprovince began prior to the eruption of the CRBG and has continued from Miocene time to the present. The rate of subsidence kept pace with the rate of CRBG flow emplacement, decreasing as CRBG volcanism waned. Simultaneously, anticlinal fold growth within the Yakima fold belt occurred under north-south compression and also decreased as the rates of subsidence and eruptions of lava declined. Paleomagnetic data indicate fold growth was accompanied by local clockwise rotation of basalt within the anticlines.The tectonic and volcanic histories of the central Columbia Plateau are interrelated and imply a common cause. The structural rotation and north-south compression, and thus fold growth, are interpreted to result from oblique subduction along a converging plate margin. The coincidence of the timing and rates of fold growth, subsidence of the central Columbia Plateau, and basalt production rates suggest that CRBG volcanism is primarily a product of oblique subduction off western North America.

show abstract

“…39b). The ancestral Columbia River did not progress laterally to the east past the present-day location of Grandview, but deposited gravels in a great swath to the west (Schmincke 1964(Schmincke , 1967d. It is speculated that at this same time the ancestral Clearwater-Salmon River was It has been proposed that this diversion was caused by (1) River was flowing south across the lower Yakima Valley (Fig.…”

Section: Just Prior To Esquatzel Time the Ancestral Clearwater-salmonmentioning

confidence: 99%

“…Observations from this study support pebbles and cobbles (Table III), conformably overlies the flow top of the Pomona Member and is itself overlain by a thicker section of laminated siltstone. Based on the gravel lithologies (Table III), stratigraphic position, and geographic location, the conglomerate is here interpreted to have been deposited by the ancestral Columbia River whose channel is found farther to the north (Schmincke 1964(Schmincke , 1967c(Schmincke , 1967d uplift that was in the field mapping area, but is found along the Horse Heaven Hills uplift to the immediate west (Schmincke 1964(Schmincke , 1967c(Schmincke , 1967dSwanson and others 1979a;Bentley and others 1980a; Bentley and others in press; Hagood, in prep.) and within the lower Yakima Valley in the vicinity of Sunnyside, Washington (Campbell 1977;Rigby and Othberg 1979 Trending approximately north-northwest across the Yakima folds ( Fig.…”

mentioning

confidence: 98%

Structure and evolution of the Horse Heaven Hills in south-central Washington

Hagood¹

2000

View full text Add to dashboard Cite

Data from this study suggest that tectonic models which directly or indirectly pertain to the origin of the Horse Heaven Hills uplift might be constrained by: (1) the predominance of monoclinal or nearmonoclinal fold geometries and reverse faults along both the northwest and northeast trends; (2) preliminary data which suggest clockwise rotation has occurred along folds of both trends; {3) folds along both trends were developing simultaneously and at similar rates (at least during Wanapum and Saddle Mountains time); (4) folds along the northwest trend of the Horse Heaven Hills uplift are genetically related to and formed simultaneously with at least some folds along the RAW; (5) the uplift was developing simultaneously with the north-northwesttrending Hog Ranch-Naneum Ridge anticline as well as other Yakima folds during at least CRB time. It is proposed that folds of both 3 trends of the Horse Heaven Hills uplift were generated by the same tectonic processes.

show abstract

Flow directions in Columbia River Basalt flows and paleocurrents of interbedded sedimentary rocks, South-Central Washington

Cited by 28 publications

References 18 publications

Evolution of the northwestern Iblean Mountains, Sicily: uplift, Plicocene/Pleistocene sea-level changes, paleoenvironment, and volcanism

Evolution of the northwestern Iblean Mountains, Sicily: uplift, Plicocene/Pleistocene sea-level changes, paleoenvironment, and volcanism

The geologic evolution of the central Columbia Plateau

Structure and evolution of the Horse Heaven Hills in south-central Washington

Contact Info

Product

Resources

About