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alluvial terraces

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Journal Article
Published: 01 September 1997
Journal of Sedimentary Research (1997) 67 (5): 840–855.
...Erick A. Bestland Abstract Flights of paleoterraces exposed in the Painted Hills area of central Oregon record periods of alluvial cutting and filling that correspond with early Oligocene climate changes. The terraced interval is situated chronologically between two global climate steps: the Eocene...
Journal Article
Published: 01 October 1994
Canadian Journal of Earth Sciences (1994) 31 (10): 1501–1509.
...R. Bruce Rains; James A. Burns; Robert R. Young Abstract Ghostpine Creek near Three Hills, southern Alberta, is a tributary of the Red Deer River. It has three sets of paired alluvial terraces (T-1 to T-3) in a downstream part of the valley. The rare discovery of a largely intact skeleton of plains...
Journal Article
Journal: GSA Bulletin
Published: 01 March 1986
GSA Bulletin (1986) 97 (3): 369–378.
...PETER C. PATTON; PAUL J. BOISON Abstract Harris Wash, a tributary of the Escalante River in south-central Utah, has two well-preserved alluvial terraces of compound origin in its lower reaches. The alluvial stratigraphy of the deposits that compose these terraces reflects the complex processes...
Journal Article
Journal: GSA Bulletin
Published: 01 March 1973
GSA Bulletin (1973) 84 (3): 1069–1074.
...CHARLES S. ALEXANDER; J. RONALD EYTON Abstract First-degree trend surfaces were fitted to the elevations from the flood plain and two terrace surfaces along both sides of the lower Ohio Valley between New Liberty and Cairo, Illinois, in an attempt to determine whether the terraces are of fluvial...
Journal Article
Journal: Geology
Published: 01 May 2007
Geology (2007) 35 (5): 439–442.
...Jon D. Pelletier Abstract Available data show that eolian dust accumulation rates on desert alluvial fan terraces are often inversely proportional to the square root of the terrace age for a given area. This temporal scaling is similar to that observed in fluvial and marine stratigraphic sequences...
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Fractured clasts on abandoned alluvial terraces. (A) Sandstone (dark) and micritic limestone (light) clasts on a 62 ka desert pavement, Shehoret fan, southern Israel. (B) Basalt boulder, Owens Valley, California, USA. (C) Granite boulder from Owens Valley. (D) Basalt boulder (50 cm in diameter) covered with lichen, northern Israel. Coin compass in panels A and C is 2.5 cm in diameter.
Published: 13 July 2023
Figure 1. Fractured clasts on abandoned alluvial terraces. (A) Sandstone (dark) and micritic limestone (light) clasts on a 62 ka desert pavement, Shehoret fan, southern Israel. (B) Basalt boulder, Owens Valley, California, USA. (C) Granite boulder from Owens Valley. (D) Basalt boulder (50 cm
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- The alluvial terraces identified in a wide area around Benevento (location in Fig. 1). The base maps are the 1: 25,000 IGM maps 173-II-NO-Benevento e 173-II-NE-Apice.
Published: 01 February 2019
Fig. 12 - The alluvial terraces identified in a wide area around Benevento (location in Fig. 1 ). The base maps are the 1: 25,000 IGM maps 173-II-NO-Benevento e 173-II-NE-Apice.
Image
Geomorphic map of alluvial terraces near Murchison Canyon and topographic profile across the canyon. Hachured polygons are terrace risers or paleochannel walls. Axis of anticline observed in scarp face is shown. Italicized numbers adjacent to fault indicate scarp height. V—vertical; H—horizontal.
Published: 01 March 2016
Figure 6. Geomorphic map of alluvial terraces near Murchison Canyon and topographic profile across the canyon. Hachured polygons are terrace risers or paleochannel walls. Axis of anticline observed in scarp face is shown. Italicized numbers adjacent to fault indicate scarp height. V—vertical; H
Image
Diagrammatic cross-section of alluvial terraces found in the Mojave National Preserve with symbols indicating the units of the three field test locations. The bucket test locations indicate units in which preliminary infiltrations were made during the process of site selection (Nimmo et al., 2008). For the terrace designations, Q indicates that the deposits are from the Quaternary period, y indicates a young deposit, i indicates an intermediate-aged deposit, and o indicates an old deposit. Numbers indicate increasing age within each of those three relative ages.
Published: 01 May 2009
F ig . 2. Diagrammatic cross-section of alluvial terraces found in the Mojave National Preserve with symbols indicating the units of the three field test locations. The bucket test locations indicate units in which preliminary infiltrations were made during the process of site selection ( Nimmo
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A pair of alluvial terraces rests above active stream grade along the northern front of the Northern Hill Range. View is westward from about N23°23′ E69°54′.
Published: 01 September 2001
Figure 11. A pair of alluvial terraces rests above active stream grade along the northern front of the Northern Hill Range. View is westward from about N23°23′ E69°54′.
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 Figure 5. Distribution of alluvial terraces along rivers in west Tennessee (after Saucier, 1987; Parks, 1992; Rodbell, 1996) and geomorphic domains inferred from basin-asymmetry vectors (arrows show generalized vector azimuths; heavy lines indicate domain boundaries). A narrow line indicates the margin of Holocene alluvial deposits. Uppercase letters identify separate domains
Published: 01 May 2001
Figure 5. Distribution of alluvial terraces along rivers in west Tennessee (after Saucier, 1987 ; Parks, 1992 ; Rodbell, 1996 ) and geomorphic domains inferred from basin-asymmetry vectors (arrows show generalized vector azimuths; heavy lines indicate domain boundaries). A narrow line indicates
Journal Article
Published: 01 May 1960
Journal of Paleontology (1960) 34 (3): 486–492.
...Bob H. Slaughter Abstract A new species of Smilodon, S. trinitiensis, is described from the Pleistocene deposits forming an alluvial terrace above the Trinity River at Dallas, Texas. GeoRef, Copyright 2004, American Geological Institute. Reference includes data from Bibliography and Index...
Journal Article
Published: 27 August 2019
Journal of Sedimentary Research (2019) 89 (8): 701–727.
...-Cretaceous unconformity). The alternation of incision and aggradation that generated the terraces was probably the result of allogenic fluctuations in sediment supply caused by climate cycles, as was the case for analogous Quaternary terrace staircases. Downstepping alluvial terraces are a viable mechanism...
FIGURES
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Journal Article
Published: 01 August 2013
Bulletin of the Seismological Society of America (2013) 103 (4): 2369–2385.
... and 3 for the location of the profile. 1 June 2012 Figure 5. 3D model of the Qiongxi and Datang segments of the QTF beneath the Mingqiong alluvial terrace, comprising the detachment, blind‐thrust ramp, and backthrust. The color version of this figure is available only...
FIGURES
First thumbnail for: Active Fault‐Related Folding beneath an <span clas...
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Image
- A) Aerial view of the northern part of the alluvial terrace Qt3 of Le Macchie (1), Castellette (2), and Coldigioco (3) with relative elevation in meters above sea level (m asl), and the finding location of the presumed sandstone sculpture (red star) with relative geographic coordinates; B) 180° wide-angle panoramic view from Monte San Vicino to the west, to the termination of the Qt3 terrace to the east of the Coldigioco and Castellette plateaus; C) the presumed sandstone artefact with a shape of a phallus; D) reflected light microphotograph of the surface of the artefact showing that it is made of a quartz-feldspar, medium grain-size sandstone with a carbonate cement (whitish areas).
Published: 01 June 2024
Fig. 1 - A) Aerial view of the northern part of the alluvial terrace Qt3 of Le Macchie (1), Castellette (2), and Coldigioco (3) with relative elevation in meters above sea level (m asl), and the finding location of the presumed sandstone sculpture (red star) with relative geographic coordinates
Image
- A) Road cut outcrop of the alluvial terrace at Palazzo di Poggio San Vicino next to the farm of Mr Lino Quatrini (43°23’19” N; 13°04’45” E; 427 m asl), about 4 km NW of Pian di Rote. Rock hammer circled in red. Note the chaotic, poorly sorted texture of this deposit, with a clast size ranging from sand to boulder. In the inset, a large nodule of Scaglia Rossa R4 chert from this outcrop, showing scars produced by violent impacts during an energetic flood transport. This kind of sediment, chaotic, poorly sorted, and lacking imbrication, is typical of proximal alluvial deposits of Middle Pleistocene Qt3 terraces in this area at the foot of the Marche Ridge (Wegmann &amp; Pazzaglia, 2009); B) A cobble of Scaglia Rossa R4 chert nodule from the same outcrop showing the carbonate cortex and more transport impact scars; C) the other side of the same cobble exhibiting a smooth, slightly undulated cut surface; D) a view of the right end side of the same cobble showing small impact marks along the upper edge of the smooth surface. These structural features, i.e., the smooth cut surface and the small impact marks, suggest that this chert cobble was manually knapped.
Published: 01 October 2023
Fig. 10 - A) Road cut outcrop of the alluvial terrace at Palazzo di Poggio San Vicino next to the farm of Mr Lino Quatrini (43°23’19” N; 13°04’45” E; 427 m asl), about 4 km NW of Pian di Rote. Rock hammer circled in red. Note the chaotic, poorly sorted texture of this deposit, with a clast size
Image
Sample 180_SH_sh, from the Q1 (62 ka) alluvial terrace of the Shehoret fan, southern Israel. (A) Hand sample with fracture. (B) Sawed sample, after impregnation with epoxy, perpendicular to the fracture surface. Pencil marking denotes the area of the thin section. (C) Parallel polarizing light photomicrograph of the material accumulated in the Accumulation Zone, containing loose dolomite rhombohedral crystals (Dol). (D) Collage (75 images) taken in parallel polarizing light through the entire fracture. (E) Collage of scanning electron microscope (SEM) backscatter electron images of the fracture (22 images) and its termination. (F and G) SEM chemical mapping of aluminum and calcium, respectively, of the area photographed by backscatter electron in panel H (marked by white rectangle on panels D and E). The area constrained by white strokes in panels F and G denotes visible change in the distribution of aluminum and calcium, respectively (and corresponding boundaries on the backscatter image, i.e., panel H). (I) Enlargement of the area where the fracture terminates and microcracks are visible ahead of the crack-tip in the process zone (four images).
Published: 13 July 2023
Figure 5. Sample 180_SH_sh, from the Q1 (62 ka) alluvial terrace of the Shehoret fan, southern Israel. (A) Hand sample with fracture. (B) Sawed sample, after impregnation with epoxy, perpendicular to the fracture surface. Pencil marking denotes the area of the thin section. (C) Parallel
Image
Fracture in sample 178_SH_sh taken from the Q1 (62 ka) alluvial terrace of the Shehoret fan, southern Israel. (A) Hand sample (with a standard match for scale). (B) Same sample, after impregnation of the fracture with epoxy, and perpendicularly sawed fracture surface. Pencil marking denotes the area of the thin section displayed in panels C–F. (C) Photomicrograph collage (94 images) taken with polarizing light. (D) An inset from the Outer Zone with black arrows denoting dolomite rhombs (Dol). (E) High-magnification image of the host rock away from the fracture surface, without (top) and with (bottom) annotation of dolomite rhombohedral crystals. (F) An inset of the Accumulation Zone and Inner Zone of the fracture (for scale see inset size in panel C). Dotted yellow marking denotes the area of the rock where deformation terminates beyond the crack-tip. (G) Roughness analyses for representative sections of the Outer, Accumulation, and Inner zones, at 45, 90, and 130 µm length scales, respectively, as marked on panel C. OZ—Outer Zone; AZ—Accumulation Zone; IZ—Inner Zone; RMSD—root mean squared deviation.
Published: 13 July 2023
Figure 7. Fracture in sample 178_SH_sh taken from the Q1 (62 ka) alluvial terrace of the Shehoret fan, southern Israel. (A) Hand sample (with a standard match for scale). (B) Same sample, after impregnation of the fracture with epoxy, and perpendicularly sawed fracture surface. Pencil marking
Image
Topographic map of the Mingqiong alluvial terrace and adjacent regions (for location see Fig. 1). The positions of 3D and 2D seismic data, the fault scarp site, topographic sections, and cross sections AA′ through EE′ are marked. The color version of this figure is available only in the electronic edition.
Published: 01 August 2013
Figure 3. Topographic map of the Mingqiong alluvial terrace and adjacent regions (for location see Fig.  1 ). The positions of 3D and 2D seismic data, the fault scarp site, topographic sections, and cross sections AA′ through EE′ are marked. The color version of this figure is available only
Image
Geological maps of the Mingqiong alluvial terrace and adjacent regions (location shown in Fig. 1). The N–S‐trending QTF shown in bold is constrained using seismic profiles, satellite imagery, and field observations. The positions of 3D and 2D seismic data, petroleum well sites, and major river systems are shown. QX, Qiongxi anticline; DT, Datang anticline; DXX, Daxingxi anticline; XP, Xiongpo anticline; PLB, Pingluoba anticline; GJC, Gaojiachang structure; LGT, Lingguan thrust. The color version of this figure is available only in the electronic edition.
Published: 01 August 2013
Figure 2. Geological maps of the Mingqiong alluvial terrace and adjacent regions (location shown in Fig.  1 ). The N–S‐trending QTF shown in bold is constrained using seismic profiles, satellite imagery, and field observations. The positions of 3D and 2D seismic data, petroleum well sites