Freshwater limestone in an arid rift basin: A goldilocks effect

Journal of Sedimentary Research

Volumn 84, Issue 11, 2014, Pages 988-1004

  Ashley, Gail M ^a   De Wet, Carol B ^b   Domínguez Rodrigo, Manuel ^c   Karis, Alyssa M ^a   O'Reilly, Theresa M ^b   Baluyot, Ronidell ^a  

^a RUTGERS UNIVERSITY   (United States)

^b FRANKLIN AND MARSHALL COLLEGE   (United States)

^c UNIVERSIDAD COMPLUTENSE DE MADRID   (Spain)

Author keywords

[No Author keywords available]

Indexed keywords

CALCITE; CARBONATION; DEPOSITS; EVAPORATION; EVAPOTRANSPIRATION; GROUNDWATER; IRON DEPOSITS; ISOTOPES; LAKES; LIME; LIMESTONE; MANGANESE DEPOSITS; POTABLE WATER; SEDIMENTOLOGY; SPRINGS (COMPONENTS); STRATIGRAPHY;

DEPOSITIONAL ENVIRONMENT; ENVIRONMENTAL CHANGE; ISOTOPE COMPOSITIONS; MEAN ANNUAL PRECIPITATION; PALEOENVIRONMENTAL CHANGE; SEDIMENTARY STRUCTURE; STRATIGRAPHIC RECORDS; WATER ROCK INTERACTIONS;

GROUNDWATER GEOCHEMISTRY;

ARID ENVIRONMENT; GEOCHEMISTRY; LIMESTONE; MILANKOVITCH CYCLE; PALEOCLIMATE; PALEOENVIRONMENT; RIFT ZONE; STRATIGRAPHY;

ARUSHA [TANZANIA]; EAST AFRICAN RIFT; OLDUVAI GORGE; TANZANIA;

EID: 84910671357     PISSN: 15271404     EISSN: None     Source Type: Journal    
DOI: 10.2110/jsr.2014.80     Document Type: Article

References (103)

1. ALONSO-ZARZA, A., 2003, Paleoenvironmental significance of palustrine carbonates and calcretes in the geological record: Earth-Science Reviews, v. 60, p. 261-298.
2. ALONSO-ZARZA, A.M., AND WRIGHT, V.P., 2010, Palustrine Carbonates, in Alonso-Zarza, A.M., and Tanner, L.H., eds., Carbonates in Continental Settings: Facies, Environments and Processes: Amsterdam, Elsevier, Developments in Sedimentology, no. 61, p. 103-131.
3. ALONSO-ZARZA, A.M., DORADO-VALIÑO, M., VALDEOLMILLOS-RODRÍQUEZ, A., AND RUIZZAPATA, M.B., 2006, A recent analogue for palustrine carbonate environments: the Quaternary deposits of Las Tables de Daimiel wetlands, Cuidad Real, Spain, in Alonso-Zara, A.M., and Tanner, L.H., eds., Paleoenvironmental Record and Applications of Calcretes and Palustrine Carbonates: Geological Society of America, Special Paper 416, p. 153-168.
4. ALONSO-ZARZA, A.M., MELÉNDEZ, A., MARTIN-GARCIA, R., HERRERO, M.J., AND MARTÍN-P ÉREZ, A., 2012, Discriminating between tectonism and climate signatures in palustrine deposits: lessons from the Miocene of the Teruel Graben, NE Spain: Earth-Sciences Reviews, v. 113, p. 141-160.
5. ARENAS, C., CASANOVA, J., AND PARDO, G., 1997, Stable-isotope characterization of the Miocene lacustrine systems of Los Monegros (Ebro Basin, Spain): palaeogeographic and palaeoclimate implications: Palaeogeography, Palaeoclimatology, Palaeoecology, v. 128, p. 133-155.
6. ARMENTEROS, I., ANGELES BUSTILLO, M.A., AND BLANCO, J.A., 1995, Pedogenic and groundwater processes in a closed Miocene basin (northern Spain): Sedimentary Geology, v. 99, p. 17-36.
7. ASHLEY, G.M., 2001, Archaeological sediments in springs and wetlands, in Stein, J.K., and Farrand, W.R., eds., Sediments in Archaeological Contexts: Salt Lake City, University of Utah Press, p. 183-210.
8. ASHLEY, G.M., 2007, Orbital rhythms, monsoons, and playa lake response, Olduvai Basin, equatorial East Africa (, 1.85-1.75): Geology, v. 35, p. 1091-1094.
9. ASHLEY, G.M., 2012, A groundwater-fed mega wetland: a perennial source of water for hominins, Upper Bed II, Olduvai Gorge, Tanzania [abstract]: Geological Society of America, Abstracts with Programs, v. 44, p. 358.
10. ASHLEY, G.M., AND HAY, R.L., 2002, Sedimentation patterns in an Plio-Pleistocene volcaniclastic rift-margin basin, Olduvai Gorge, Tanzania, in Renaut, R.W., and Ashley, G.M., eds., Sedimentation in Continental Rifts: SEPM, Special Publication 73, p. 107-122.
11. ASHLEY, G.M., TACTIKOS, J.C., AND OWEN, R.B., 2009, Hominin use of springs and wetlands: paleoclimate and archaeological records from Olduvai Gorge (1.79- 174 Ma): Palaeogeography, Palaeoclimatology, Palaeoecology, v. 272, p. 1-16.
12. ASHLEY, G.M., BARBONI, D., DOMÍNGUEZ-RODRIGO, M., BUNN, H.T., MABULLA, A.Z.P., DIEZ-MARTÍN, F., BARBA, R., AND BAQUEDANO, E., 2010a, Paleoenvironmental and paleoecological reconstruction of a freshwater oasis in savannah grassland at FLK North, Olduvai Gorge, Tanzania: Quaternary Research, v. 74, p. 333-343.
13. ASHLEY, G.M., BARBONI, D., DOMÍNGUEZ-RODRIGO, M., BUNN, H.T., MABULLA, A.Z.P., DIEZ-MARTÍN, F., BARBA, R., AND BAQUEDANO, E., 2010b, A spring and wooded habitat at FLK Zinj and their relevance to origins of human behavior: Quaternary Research, v. 74, p. 304-314.
14. ASHLEY, G.M., DOMÍNGUEZ-RODRIGO, M., BUNN, H.T., MABULLA, A.Z.P., AND BAQUEDANO, E., 2010c, Sedimentary geology and human origins: a fresh look at Olduvai Gorge, Tanzania: Sedimentary Research, v. 80, p. 703-709.
15. ASHLEY, G.M., DEOCAMPO, D.M., KAHMANN-ROBINSON, J., AND DRIESE, S.G., 2013, Groundwater-fed wetland sediments and paleosols: It's all about water table, in Driese, S.G., and Nordt, L.C., eds., New Frontiers in Paleopedology and Terrestrial Paleoclimatology: Paleosols and Soil Surface Analog Systems: SEPM, Special Publication 104, p. 47-61.
16. ASHLEY, G.M., BUNN, H.T., DELANEY, J.S., BARBONI, D., DOMÍNGUEZ-RODRIGO, M., MABULLA, A.Z.P., GURTOV, A.N., BALUYOT, R.D., BEVERLY, E.J., AND BAQUEDANO, E., 2014, Paleoclimatic and paleoenvironmental framework of FLK North archaeological site, Olduvai Gorge, Tanzania: Quaternary International, v. 322-323, p. 54-65.
17. BALUYOT, R.D., 2011, Paleoenvironmental reconstruction of a Pleistocene landscape, Olduvai Gorge, Tanzania [unpublished Undergraduate Honors thesis]: Rutgers University, 46 p.
18. BARBONI, D., ASHLEY, G.M., DOMÍNGUEZ-Rodrigo, M., BUNN, H.T., MABULLA, A.Z.P., AND BAQUEDANO, E., 2010, Phytoliths infer locally dense and heterogeneous paleovegetation at FLK North and surrounding localities during upper Bed I time, Olduvai Gorge, Tanzania: Quaternary Research, v. 74, p. 344-354.
19. BENNETT, C.E., MARSHALL, J.D., AND STANISTREET, I.G., 2012, Carbonate horizons, paleosols, and lake flooding cycles: Beds I and II of Olduvai Gorge, Tanzania: Journal of Human Evolution, v. 63, p. 328-341.
20. BIRNEY DE WET, C.C., AND HUBERT, J.F., 1989, The Scots Bay Formation, Nova Scotia, Canada, a Jurassic carbonate lake with silica-rich hydrothermal springs: Sedimentology, v. 36, p. 857-873.
21. BLUMENSCHINE, R.J., PETERS, C.R., MASAO, F.T., CLARKE, R.J., DEINO, A.L., HAY, R.L., SWISHER, C.C., STANISTREET, I.G., ASHLEY, G.M., MC HENRY, L.J., SIKES, N.E., VAN DER MERWE, N.J., TACTIKOS, J.C., CUSHING, A.E., DEOCAMPO, D.M., NJAU, J.K., AND EBERT, J.I., 2003, Lake Pliocene Homo and hominid land use from western Olduvai Gorge, Tanzania: Science, v. 299, p. 1217-1221.
22. BOWEN, G.J., 2010, The Online Isotopes in Precipitation Calculator, http:/www. waterisotopes.org.
23. BRASIER, M.D., 1980, Microfossils: London, George Allen and Unwin, 193 p.
24. BUNN, H.T., AND KROLL, E.M., 1986, Systematic butchery by Plio-Pleistocene hominids at Olduvai Gorge, Tanzania: Current Anthropology, v. 27, p. 431-452.
25. BUNN, H.T., MABULLA, A.Z.P., DOMÍNGUEZ-RODRIGO, M., ASHLEY, G.M., BARBA, R., DIEZ-MARTÍN, F., REMER, K., YRAVEDRA, J., AND BAQUEDANO, E., 2010, Was FLK North levels 1-2 a classic "living floor" of Oldowan hominins or a taphonomically complex palimpsest dominated by large carnivore feeding behavior?: Quaternary Research, v. 74, p. 355-362.
26. BUSTILLO, M.A., AND ALONSO-ZARZA, A.M., 2007, Overlapping of pedogenesis and meteoric diagenesis in distal alluvial and shallow lacustrine deposits in the Madrid Miocene Basin, Spain: Sedimentary Geology, v. 198, p. 255-271.
27. CABALERI, N.G., AND BENAVENTE, C.A., 2013, Sedimentary and paleoenvironments of the Las Caritas carbonate paleolake Canadon, Asfalto formation (Jurassic), Patagonia, Argentina: Sedimentary Geology, v. 284-285, p. 91-105.
28. CERLING, T.E., AND HAY, R.L., 1986, An isotopic study of paleosol carbonates from Olduvai Gorge: Quaternary Research, v. 25, p. 63-78.
29. CERLING, T.E., AND QUADE, J., 1993, Stable carbon and oxygen isotopes in soil carbonates., in Swart, P.K., Lohmann, K.C., McKenzie, J., and Savin, S., eds., Climate Change in Continental Isotopic Records: American Geophysical Union, Geophysical Monograph 78, p. 217-231.
30. COLSON, J., AND COJAN, I., 1996, Groundwater dolocretes in a lake-marginal environment: an alternative model for dolocrete formation in continental settings (Danian of the Provence Basin, France) Sedimentology, v. 43, p. 175-188.
31. COPLEN, T.B., KENDALL, C., AND HOPPLE, J., 1983, Comparison of stable isotope reference samples: Nature, v. 302, p. 236-238.
32. DAGG, M., WOODHEAD, T., AND RIJKS, D.A., 1970, Evaporation in East Africa: International Association of Scientific Hydrology, Bulletin, v. 15, p. 61-67.
33. DAWSON, J.B., 2008, The Gregory Rift Valley and Neogene-Recent volcanoes of northern Tanzania: Geological Society of London, Memoirs, v. 33, 102 p.
34. DE WET, C.B., MORA, C.I., GORE, P.J.W., GIERLOWSKI-KORDESCH, E.H., AND CUCOLO, S.J., 2002, Deposition and geochemistry of lacustrine and spring carbonates in Mesozoic rift basins, Eastern North America, in Renaut, R.W., and Ashley, G.M., eds., Sedimentation in Continental Rifts: SEPM, Special Publication 73, p. 309-325.
35. DEAN, W.E., AND FOUCH, T.D., 1982, Lacustrine Environment, in Scholle, P.A., Bebout, D.G., and Moore, C.H., eds., Carbonate Depositional Environments: American Association of Petroleum Geologists, Memoir 33, p. 98-130.
36. DEINO, A.L., 2012, 40Ar/39Ar dating of Bed I. Olduvai Gorge, Tanzania, and the chronology of early Pleistocene climate change: Journal of Human Evolution, v. 63, p. 251-273.
37. DEINO, A.L., KINGSTON, J.D., GLEN, J.M., EDGAR, R.K., AND HILL, A., 2006, Precessional forcing of lacustrine sedimentation in the late Cenozoic Chemeron Basin, Central Kenya Rift, and calibration of the Gauss/Matuyama boundary: Earth and Planetary Science Letters, v. 247, p. 41-60.
38. DEOCAMPO, D.M., 2002, Sedimentary processes and lithofacies in lake-margin groundwater-fed wetlands in East Africa, in Renaut, R.W., and Ashley, G.M., eds., Sedimentation in Continental Rifts: SEPM, Special Publication 73, p. 295-308.
39. DEOCAMPO, D.M., 2004, Authigenic clays in East Africa: regional trends and paleolimnology at the Plio-Pleistocene boundary, Olduvai Gorge, Tanzania: Journal of Paleolimnology, v. 31, p. 1-9.
40. DEOCAMPO, D.M., AND TACTIKOS, J.C., 2010, Geochemical gradients and artifact mass densities on the lowermost Bed II eastern lake margin (∼ 1.8 Ma), Olduvai Gorge, Tanzania: Quaternary Research, v. 74, p. 411-423.
41. DEOCAMPO, D.M., CUADROS, J., WING-DUDEK, T., OLIVES, J., AND AMOURIC, M., 2009, Saline lake diagenesis as revealed by coupled mineralogy and geochemistry of multiple ultrafine clay phases: Pliocene Olduvai Gorge, Tanzania: American Journal of Science, v. 309, p. 834-868.
42. DICKSON, J.A.D., 1966, Carbonate identification and genesis as revealed by staining: Journal of Sedimentary Petrology, v. 36, p. 491-505.
43. DOMÍNGUEZ-RODRIGO, M., AND BARBA, R., 2007, A palimpsest at FLK North 1-2: independent carnivore- and hominid-made bone accumulations, in Domínguez-Rodrigo, M., Barba, R., and Egeland, C.P., eds., Deconstructing Olduvai: a Taphonomic Study of the Bed I Sites: Dordrecht, Springer, Vertebrate Paleobiology and Paleoanthropology, p. 127-164.
44. DOMÍNGUEZ-RODRIGO, M., BARBA, R., AND EGELAND, C.P., 2007, Deconstructing Olduvai: a taphonomic study of the Bed I sites Vertebrate Paleobiology and Paleoanthropology Series: Dordrecht, Springer, 337 p.
45. Domínguez-Rodrigo, M., MABULLA, A.Z.P., BUNN, H.T., DIEZ-MARTÍN, F., BARBONI, D., BARBA, R., DOMÍNGUEZ-SOLERA, S., SÁNCHEZ, P., ASHLEY, G.M., BAQUEDANO, E., AND YRAVEDRA, J., 2010, Disentangling hominin and carnivore activities near a spring at FLK North (Olduvai Gorge, Tanzania): Quaternary Research, v. 74, p. 363-375.
46. DOMÍNGUEZ-RODRIGO, M., PICKERING, T.R., BAQUEDANO, E., MABULLA, A.Z.P., MARK, D.F., MUSIBA, C., BUNN, H.T., URIBELARREA, D., SMITH, V., DIEZ-MARTIN, F., P ÉREZGONZÁLEZ, A., S ÁNCHEZ, P., SANTONJA, M., BARBONI, D., GIDNA, A., ASHLEY, G., YRAVEDRA, J., HEATON, J., AND ARRIAZA, M.C., 2013, First partial skeleton of a 1.34-milllion-year-old Paranthropus boisei from Bed II, Olduvai Gorge, Tanzania: PLOS One, v. 8.
47. ESTEBAN, M., AND KLAPPA, C.P., 1983, Subaerial exposure environment, in Scholle, P.A., Bebout, D.G., and Moore, C.H., eds., Carbonate Depositional Environments: American Association of Petroleum Geologists, Memoir 33, p. 2-95.
48. FORD, T.D., AND PEDLEY, H.M., 1996, A review of tufa and travertine deposits of the world: Earth-Science Reviews, v. 41 p. 117-175.
49. FOSTER, A., EBINGER, C., MBEDE, E., AND REX, D., 1997, Tectonic development of the northern Tanzanian sector of the East Africa Rift System: Geological Society of London, Journal, v. 154, p. 689-700.
50. FREYTET, P., AND PLAZIAT, J.C., 1982, Continental carbonate sedimentation and pedogenesis: Late Cretaceous and early Tertiary of Southern France: Contributions to Sedimentology, v. 12, p. 1-213.
51. GASSE, F., 1990, Tectonic and climatic controls on lake distribution and environments in Afar from Miocene to present, in Katz, B.J., ed., Lacustrine Basin Exploration, Case Studies and Modern Analogs: American Association of Petroleum Geologists, Memoir 50, p. 19-41.
52. GASSE, F., FONTES, J.C., PLAZIAT, J.C., CARBONEL, P., KACZMARSKA, I., DE DECKKER, P.D., SOULIÉ-MARSCHE, I., CALLOT, Y., AND DUPEUBLE, P.A., 1987, Biological remains, geochemistry and stable isotopes for the reconstruction of environmental and hydrological changes in the Holocene lakes from North Sahara: Palaeogeography, Palaeoclimatology, Palaeoecology, v. 60, p. 1-46.
53. HAY, R.L., 1976, Geology of the Olduvai Gorge: Berkeley, University of California Press, 203 p.
54. HAY, R.L., AND KYSER, T.K., 2001, Chemical sedimentology and paleoenvironmental history of Lake Olduvai, a Pleistocene lake in northern Tanzania: Geological Society of America, Bulletin, v. 113, p. 1505-1521.
55. HAY, R.L., AND REEDER, R.J., 1978, Calcretes of Olduvai Gorge and the Ndolanya beds of northern Tanzania: Sedimentology, v. 25, p. 649-673.
56. HAY, R.L., PEXTON, R.E., TEAGUE, T.T., AND KYSER, T.K., 1986, Spring-related carbonate rocks, Mg clays, and associated minerals in Pliocene deposits of the Amargosa Desert, Nevada and California: Geological Society of America, Bulletin, v. 97, p. 1488-1503.
57. HOVER, V.C., AND ASHLEY, G.M., 2003, Geochemical signatures of paleodepositional and diagenetic environments: a STEM/AEM study of authigenic clay minerals from an arid rift basin, Olduvai Gorge, Tanzania: Clays and Clay Minerals, v. 51, p. 231-251.
58. HURWITZ, S., STANISLAVSKY, E., LYAKHOVSKY, V., AND GVIRTZMAN, H., 2000, Transient groundwater-lake interactions in a continental rifts: Sea of Galilee, Israel: Geological Society of America, Bulletin, v. 112, p. 1694-1702.
59. KAMPMAN, N., BURNSIDE, N.M., SHIPTON, Z.K., CHAPMAN, H.J., NICHOLL, J.A., ELLAM, R.M., AND BICKLE, M.J., 2012, Pulses of carbon dioxide emissions from intracrustal faults following climatic warming: Nature Geoscience, v. 5, p. 352-358.
60. KARIS, A.M., ASHLEY, G.M., AND WRIGHT, J.D., 2012, Spatial and temporal variability of stable isotopes in an Upper Bed II tufa, Olduvai Gorge, Tanzania [abstract]: Geological Society of America, Abstracts with Program, v. 44, p. 239.
61. KATZ, B.J., 1990, Lacustrine Basin Exploration, Case Studies and Modern Analogs: American Association of Petroleum Geologists, Memoir, v. 50, 340 p.
62. KAZANCL, N.G., GEVREK, A.I., AND VAROL, B., 1995, Facies changes and high calorific peat formation in a Quaternary maar lake, central Anatolia, Turkey: the possible role of geothermal processes in a closed lacustrine basin: Sedimentary Geology, v. 94, p. 255-266.
63. KHALAF, F.I., 1990a, Occurrence of phreatic dolocrete within Tertiary clastic deposits of Kuwait, Arabian Gulf: Sedimentary Geology, v. 68, p. 223-239.
64. LE GALL, B., NONNOTTE, P., ROLET, J., BENOIT, M., GUILLOU, H., MOUSSEAU-NONNOTTE, M., ALBARIC, J., AND DEVERCHERE, J., 2008, Rift propogation at craton margin. Distribution of faulting and volcanism in the North Tanzanian Divergence (East Africa) during Neogene times: Tectonophysics, v. 448, p. 1-19.
65. LEAKEY, L.S.B., 1959, A new fossil skull from Olduvai: Nature, v. 184, p. 491-493.
66. LEAKEY, M.D., 1971, Olduvai Gorge: excavations in Beds I and II: 1960-1963: Cambridge, U.K., Cambridge University Press, v. 3, 306 p.
67. LIUTKUS, C.M., 2009, Using petrography and geochemistry to determine the origin and formation mechanism of calcitic plant molds: rhizolith or tufa?: Journal of Sedimentary Research, v. 79, p. 906-917.
68. LIUTKUS, C.M., AND ASHLEY, G.M., 2003, Facies model of a semiarid freshwater wetland, Olduvai Gorge, Tanzania: Journal of Sedimentary Research, v. 73, p. 691-705.
69. MACK, G.H., COLE, D.R., AND TREVINO, L., 2000, The distribution and discrimination of shallow, authigenic carbonate in the Plio-Pleistocene Palomas Basin, Southern Rio Grande rift: Geological Society America, Bulletin, v. 112, p. 643-656.
70. MAGILL, C.R., ASHLEY, G.M., AND FREEMAN, K.H., 2012a, Ecosystem variability and early human habitats in eastern Africa: Proceedings of the National Academy of Sciences, U.S.A.,v. 110, p. 1167-1174.
71. MAGILL, C.R., ASHLEY, G.M., AND FREEMAN, K.H., 2012b, Water, plants, and early human habitats in eastern Africa: Proceedings of the National Academy of Sciences, U.S.A., v. 110, p. 1175-1180.
72. MCCARTHY, T.S., AND ELLERY, W.N., 1995, Sedimentation on the distal reaches of the Okavango fan, Botswana, and its bearing on calcrete and silcrete (ganister) formation: Journal of Sedimentary Research, v. 65, p. 77-90.
73. MCHENRY, L.J., 2005, Phenocryst composition as a tool for correlating fresh and altered tephra, Bed I, Olduvai Gorge, Tanzania: Stratigraphy, v. 2, p. 101-115.
74. MCHENRY, L.J., 2009, Element mobility during zeolitic and argillic alteration of volcanic ash in a closed-basin lacustrine environment: Case study Olduvai Gorge, Tanzania: Chemical Geology, v. 265, p. 540-552.
75. MCHENRY, L.J., MOLLEL, G.F., AND SWISHER, C.C., 2008, Compositional and textural correlations between Olduvai Gorge Bed I tephra and volcanic sources in the Ngorongoro Volcanic Highlands, Tanzania: Quaternary International, v. 178, p. 306-319.
76. MEES, F., 2002, The nature of calcareous deposits along pan margins in eastern central Namibia: Earth Surface Processes and Landforms, v. 27, p. 719-735.
77. MICHEL, L.A., DRIESE, S.G., NORDT, L.C., BREEKER, D.O., LABOTKA, D.M., AND DWORKIN, S.I., 2013, Stable-isotope geochemistry of vertisols formed on marine limestone and implications for deep-time paleoenvironmental reconstructions: Journal of Sedimentary Research, v. 83, p. 300-308.
78. MOLLEL, G.F., SWISHER, C.C.,M CHENRY, L.J., FEIGENSON.M.D., AND CARR.M.J., 2009, Petrogenesis of basalt-trachyte lavas from Olmoti Crater, Tanzania: Journal of African Earth Sciences, v. 54, p. 127-143.
79. MOLLEL, G.F., SWISHER, C.C., III, FEIGENSON, M.D., AND CARR, M.J., 2011, Petrology, geochemistry and age of Satiman, Lemagurut and Oldeani: sources of the volcanic deposits of the Laetoli Area, in Harrison, T., ed., Paleontology and Geology of Laetoli: Human Evolution in Context: Springer Science/Business Media, p. 99-119.
80. MONTY, C.L.V., AND HARDIE, L.A., 1976, The geological significance of the freshwater blue-green algal calcareous marsh, in Walter, M.R., ed., Stromatolites: Amsterdam, Elsevier, Developments in Sedimentology, no. 20, p. 447-477.
81. MOUNT, J.F., AND COHEN, A.S., 1984, Petrology and geochemistry of rhizoliths from Plio-Pleistocene fluvial and marginal lacustrine deposits, east Lake Turkana, Kenya: Journal of Sedimentary Research, v. 54, p. 263-275.
82. OLAGO, D., OPERE, A., AND BARONGO, J., 2009, Holocene palaeohydrology, groundwater and climate change in the lake basins of the Central Kenya Rift: Hydrological Sciences Journal, v. 54, p. 765-780.
83. OLSEN, P.E., 1986, A 40-million year lake record of early Mesozoic orbital climatic forcing: Science, v. 234, p. 842-848.
84. PECK, R.E., 1953, Fossil charophytes: The Botanical Review, v. 19, p. 209-227.
85. PEDLEY, H.M., 1990, Classification and environmental models of cool freshwater tufas: Sedimentary Geology, v. 68 p. 143-154.
86. PEDLEY, M., ANDREWS, J., ORDONEZ, S., GARCIA DEL CURA, M.A., GONZALES MARTIN, J.-A., AND TAYLOR, D., 1996, Does climate control the morphological fabric of freshwater carbonates? A comparative study of Holocene barrage tufas from Spain and Britain: Palaeogeography, Palaeoclimatology, Palaeoecology, v. 121, p. 239-257.
87. PENTECOST, A., 2005, Travertine: Berlin, Springer-Verlag, 445 p.
88. PLA-PUEYO, S., GIERLOWSKI-KORDESCH, E.H., VISERAS, C., AND SORIA, J.M., 2009, Major controls on sedimentation during the evolution of a continental basin: Pliocene-Pleistocene of the Guadix Basin (Betic Cordillera, southern Spain) Sedimentary Geology, v. 219, p. 97-114.
89. PLATT, N.H., 1989, Lacustrine carbonates and pedogenesis: sedimentology and origin of palustrine deposits from the Early Cretaceous Rupelo Formation, W. Cameros Basin, N. Spain: Sedimentology, v. 36, p. 665-684.
90. PURVIS, K., AND WRIGHT, V.P., 1991, Calcretes related to phreatophytic vegetation from the Middle Triassic Otter Sandstone of South West England: Sedimentology, v. 38, p. 539-551.
91. QUADE, J., CHIVAS, A.R., AND MCCULLOCH, M.T., 1995, Strontium and carbon isotope tracers and the origins of soil carbonate in South Australia and Victoria: Palaeogeography, Palaeoclimatology, Palaeoecology, v. 113, p. 103-117.
92. SIKES, N.E., AND ASHLEY, G.M., 2007, Stable isotopes of pedogenic carbonates as indicators of paleoecology in the Plio-Pleistocene (upper Bed I) western margin of Olduvai Basin, Tanzania: Journal of Human Evolution, v. 53, p. 574-594.
93. SPÖTL, C., AND WRIGHT, V.P., 1992, Groundwater dolocretes from the upper Triassic of the Paris Basin, France: a case study of an arid, continental diagenetic facies: Sedimentology, v. 39, p. 1119-1136.
94. STEWART, K.M., 1994, Early hominid utilisation of fish resources and implications for seasonality and behavior: Journal of Human Evolution, v. 27, p. 229-245.
95. STEWART, K.M., 1996, A report on the fish remains from Beds I and II sites, Olduvai Gorge, Tanzania: Kaupia Darmstadter Beitrage zur Naturgeschichte, v. 6, p. 263-269.
96. STOLLHOFEN, H., STANISTREET, I.G.,M CHENRY, L.J.,MOLLEL, G.F., BLUMENSCHINE, R.J., AND MASAO, F.T., 2008, Fingerprinting facies of the Tuff IF marker, with implications for early hominin palaeoecology, Olduvai Gorge, Tanzania: Palaeogeography, Palaeoclimatology, Palaeoecology, v. 259, p. 382-409.
97. SUCHECKI, R.K., HUBERT, J.F., AND BIRNEY DE WET, C.B., 1988, Isotopic imprint of climate and hydrogeochemistry on terrestrial strata of the Triassic-Jurassic Hartford and Fundy rift basins: Journal of Sedimentary Petrology, v. 58, p. 801-811.
98. TALBOT, M.R., 1990, A review of the palaeohydrological interpretation of carbon and oxygen isotopic ratios in primary lacustrine carbonates: Chemical Geology, Isotope Geoscience Section, v. 80, p. 261-279.
99. TANDON, S.K., AND ANDREWS, J.E., 2001, Lithofacies associations and stable isotopes of palustrine and calcrete carbonates: examples from an Indian Maastrichtian regolith: Sedimentology, v. 48, p. 339-355.
100. TANDON, S.K., AND FRIEND, P.F., 1989, Near-surface shrinkage and carbonate replacement processes, Arran Cornstone Formation, Scotland: Sedimentology, v. 36, p. 1113-1126.
101. TASCH, P., 1973, Paleobiology of invertebrates: data retrieval from the fossil record: New York, John Wiley & Sons, 946 p.
102. TRAUTH, M.H., MASLIN, M.A., DEINO, A.L., STRECKER, M.R., BERGNER, A.G.N., AND DUHNFORTH, M., 2007, High- and low-latitude forcing of Plio-Pleistocene East Africa climate and human evolution: Journal of Human Evolution, v. 53, p. 475-486.
103. VALERO GARCÉS, B.L., MORENO, A., NAVAS, A., MATA, P., MACHÍN, J., GONZÁLEZ SAMPÉRIZ, P., SCHWALB, A.,MERELLÓN.M., CHENG, H., AND EDWARDS, R.L., 2008, The Taravilla Lake and tufa deposits (Central Iberian Range, Spain) as palaeohydrological and palaeoclimate indicators: Palaeogeography, Palaeoclimatology, Palaeoecology, v. 259, p. 136-156.