Composition and Provenance History of Late Cenozoic Sediments in Southeastern Bolivia: Implications for Chaco Foreland Basin Evolution and Andean Uplift

Hulka, Carola; Heubeck, Christoph

doi:10.2110/jsr.2010.029

Cited by 28 publications

(21 citation statements)

References 51 publications

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“…11). Locally up to 4 m thick conglomerates have been documented (Hulka and Heubeck, 2010;Plink-Björklund and Birgenheier, 2013) (Fig. 11a-c).…”

Section: Thick Soft-sediment Clast Conglomeratesmentioning

confidence: 92%

“…Lack of barforms or well developed accretion sets has been suggested as one of the characteristic features of rivers with seasonally variable discharge (e.g., Rhee and Chough, 1993;Uba et al, 2005;Billi, 2007;Hampton and Horton, 2007;Fielding et al, 2009;Hulka and Heubeck, 2010;Allen et al, 2011). In Table 1, half of the papers do report the presence of downstream or lateral accretion sets or bars, but 58% note that macroforms are not well developed and vertical or gentle downstream accretion prevails (e.g., Tunbridge, 1981;Stear, 1985;Olsen, 1989;North and Taylor, 1996;Zaleha, 1997; Thomas et al, 2002; Kumar et al, 2003;Allen et al, 2013Allen et al, , 2014Plink-Björklund and Birgenheier, 2013) (Figs.…”

Section: Poorly Developed Macroformsmentioning

confidence: 99%

“…In the geological record, avulsions are evidenced by the dominance of downstream and vertical accretion, and thus lack of systematic channel migration, as well as the lack of well-developed macroforms (e.g., Tunbridge, 1981;Stear, 1985;Olsen, 1989;Rhee and Chough, 1993;North and Taylor, 1996;Zaleha, 1997;Thomas et al, 2002;Kumar et al, 2003;Uba et al, 2005;Billi, 2007;Hampton and Horton, 2007;Fielding et al, 2009;Hulka and Heubeck, 2010;Allen et al, 2011Allen et al, , 2013Allen et al, , 2014Plink-Björklund and Birgenheier, 2013;Plink-Björklund et al, 2014a). Furthermore, frequent avulsions result in a high degree of channel amalgamation in areas with high channel return frequency, and in splay-rich floodplains in areas with lower channel return frequency (e.g., Shukla et al, 2001;Alexander and Fielding, 2006;Hajek and Wolinsky, 2012;Plink-Björklund and Birgenheier, 2013;PlinkBjörklund et al, 2014a) (Fig.…”

Section: Avulsionsmentioning

confidence: 99%

“…(a) Several meters thick mud and caliche clast conglomerate in the OligoceneMiocene Petaca Fm., Andean Foreland (fromHulka and Heubeck(2010)). A 4 m thick mud clast conglomerate that is disorganized within the lower 2 m (b) and stratified within the upper 2 m (c), Eocene Wasatch Fm., Uinta Basin, USA.…”

mentioning

confidence: 99%

“…In conglomeratic channel fills, the single flood deposits tend to consist of erosionally based conglomerate to sandstone units. Examples from (a) Devonian Snehvide Fm., Greenland (fromKelly and Olsen(1993)); (b) Miocene-Pliocene Guandacay Fm., Andean Foreland (fromHulka and Heubeck (2010)); (c) photo and (d) line drawing of Miocene-Pliocene Guandacay Fm., Andean Foreland (from…”

mentioning

confidence: 99%

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Morphodynamics of rivers strongly affected by monsoon precipitation: Review of depositional style and forcing factors

Plink‐Björklund

2015

Sedimentary Geology

136

137

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Keywords:Monsoon Subtropical River morphodynamics Discharge range High-magnitude river floods Monsoonal and subtropical river facies models Rivers that receive significant amounts of their surface water supply from monsoon precipitation characteristically experience seasonal floods, and display seasonally highly variable discharge, controlled by the monsoon trough passage and its related cyclones. The intense summer rainfall causes high-magnitude floods, whereas rivers only transmit a low base flow during the dry winters. For many rivers in the sub-humid to arid subtropics, bordering the monsoon domain, the monsoon rain is also the main source of surface water recharge. However, such rivers may receive monsoon rain and transmit discharge only during abnormal or strengthened monsoon seasons. This annual discharge variability or range, as compared to the mean annual discharge, distinguishes the monsoonal and subtropical rivers from the rivers in equatorial tropics and temperate perennial precipitation zones, where the annual range is relatively small compared to the annual mean discharge. This review explores the effects of this seasonal and yearly variable rainfall, and the resultant highly peaked discharge pattern on river morphodynamics, and presents a comparison of modern and ancient monsoonal and subtropical river deposits. The field datasets and literature analyses discussed herein provide recognition criteria for monsoon-controlled river deposits, by documenting the diversity of the sedimentary facies, macroforms (bar forms), and architectural elements common in ancient and modern monsoon-controlled rivers. The review demonstrates that seasonal and inter-annual precipitation range is a key control on river morphodynamics, and resultant sedimentary facies characteristics, rather than the specific climate zone or average annual precipitation.

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“…11). Locally up to 4 m thick conglomerates have been documented (Hulka and Heubeck, 2010;Plink-Björklund and Birgenheier, 2013) (Fig. 11a-c).…”

Section: Thick Soft-sediment Clast Conglomeratesmentioning

confidence: 92%