Differential dissolution of a Pleistocene reef in the ground-water mixing zone of coastal Yucatan, Mexico

Back, William; Hanshaw, Bruce B.; Herman, Janet S.; Driel, J. Nicholas Van

doi:10.1130/0091-7613(1986)14<137:ddoapr>2.0.co;2

Cited by 191 publications

(98 citation statements)

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“…The mixing of freshwater with seawater results in the formation of the two waters creates a sharp interface with a steep gradient 1989; van Hengstum and Scott, 2011;Martin et al, 2012). Mixing zones within carbonate islands have been recognized as the primary locations for dissolution of carbonates (Back et al, 1986;Mylroie and Carew, 1990;Carew and Mylroie, 1995;Mylroie, 2008). The porosity in the mixing zone can be enhanced by the generation of acids, such as carbonic and sulfuric from bacterial activity in the surrounding rock matrix (Bottrell et al, 1991;Schwabe et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

Baseline physicochemical investigations on waters from three blue holes, San Salvador Island, Bahamas

Sampson¹,

Guilbeault²

2013

Studia UBB Geologia

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Abstract. Physicochemical parameters have been studied in the water column of Inkwell, Church, and Watling's Blue Holes (San Salvador Island, Bahamas). Water samples were collected from multiple depths at the three blue holes to identify and characterize changes of physical and chemical parameters. The values were compared to the average ocean concentrations in order to assess how connectivity to the ocean, evaporation, freshwater input, and Inkwell and Church blue holes are inferred from changes in the concentration of chloride. The degree of variation is a mixed signal resulting from changes of the precipitation/evaporation balance and tidal driven water-rock interaction.-) from 300 to 9591.8 mg/L, and total hardness (9 to 293 mg/L) within the mixing zone. This location is the only site that may have a true halocline. Watlings's geochemical parameters have the smallest range (i.e. Cl - Cl-values between surface and -2 m suggests mixing is occurring. The lack of other parameter variations within the SO4 2-) concentration at the same depth reach its maximum value (4009 mg/L). The high sulfate values throughout the column (2634 to 4009 mg/L) are characteristic of seawater (>2700 mg/L), thus indicating seawater seepage into the blue hole. We assume the elevated salinity values at the surface and -1 m are pointing towards evaporative processes.

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Section: Introductionmentioning

confidence: 99%

Baseline physicochemical investigations on waters from three blue holes, San Salvador Island, Bahamas

Sampson¹,

Guilbeault²

2013

Studia UBB Geologia

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“…Wlth~n these 'underground estuaries' in areas such as the Yucatan Pen~nsula of Mexico, vast cave networks, technically termed anchialine, meandelthrough the Pleistocene bedrock (Back et al 1979). Mixing of the water masses at the halocli.ne produces a corrosive solution capable of dissolving additional limestone (Back et al 1986) (Fig. l a ) .…”

Section: Introductionmentioning

confidence: 99%

A stable isotope study of organic cycling and the ecology of an anchialine cave ecosystem

Jw¹,

Iliffe²,

La³

1997

Mar. Ecol. Prog. Ser.

110

116

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ABSTRACT. Stable carbon and nltrogen isotope data, complen~ented wlth other geochemical parameters, were used to Identify the sources of organic mattrr that support the food web of an anchialine cave ecosystem In the northeastern Yucatan Peninsula, Mexlco. A n c h~a l~n e caves, coinmon along tropical kal-st~c and volcan~c coastlines, are completely or partially Inundated by highly stratified layers of fresh and marine waters. Stable isotope data from the cave fauna, the particulate organlc matter (POM) from the cenote pool and from the cave, the forest soil and the cave sedlmcnts ~ndicated that at least 3 soul-ces of nutritive organics could support the anchialine food web. Thcsr sources were. (1) soil from the overlying forest; (2) freshwater algae from adjoining open water pools; and (3) chernoautotrophic nitrifying bactei-la living in the cave. Production of nitrate a n d a tlccrcasc in O2 along the halocline provided geochemlcal evidence of nitrification. Stable nitrogen isotope datd defined 2 to 2.5 trophic levels In the food web. Furthermore, it was found that troglobitic (cave-limited) species res~ding In the water column a r e cilpable of preferentially feeding on specific organic reservoirs. This study presents the first extensive description of the ecological and biogeochemical relationships of the anchialine cave ecosystem.

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“…One of their other examples was an evaluation of mixing of fresh groundwater with salty groundwater along the fringes of Caleta Xel Ha, a coastal lagoon along the eastern coastline of the Yucatan Peninsula, Mexico. The geomorphic significance of the geochemical work was presented by Back et al (1979) and Back et al (1986) mature, Pleistocene karst" lives on as a testament to the long life of the cycle of erosion (FS 1-1).…”

Section: Intertwining Geochemists Bring Fields Togethermentioning

confidence: 99%

Quantitative hermeneutics: Counting forestructures on a path from W.M. Davis to the concept of multiple-permeability karst aquifers

Vacher¹,

Florea

2015

IJS

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Differential dissolution of a Pleistocene reef in the ground-water mixing zone of coastal Yucatan, Mexico

Cited by 191 publications

References 0 publications

Baseline physicochemical investigations on waters from three blue holes, San Salvador Island, Bahamas

Baseline physicochemical investigations on waters from three blue holes, San Salvador Island, Bahamas

A stable isotope study of organic cycling and the ecology of an anchialine cave ecosystem

Quantitative hermeneutics: Counting forestructures on a path from W.M. Davis to the concept of multiple-permeability karst aquifers

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