Solar influence and hydrological variability during the Holocene from a speleothem annual record (Molinos Cave, <scp>NE</scp> Spain)

Bartolomé, Miguel; Muñoz, Arsenio; Sancho, Carlos; Moreno, Ana; Hellström, John; Osácar, María Cinta; Cacho, Isabel

doi:10.1111/ter.12160

Cited by 17 publications

(4 citation statements)

References 43 publications

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“…Correlation of annual growth rate with instrumental temperature or precipitation records was weak or absent at Akçakale Cave (Jex, 2008) and Rukiesa Cave, Ethiopia (Baker et al., 2007). At Molinos Cave, thicker laminations grew during intervals characterized by more negative δ 13 C values, and were darker in reflected light, interpreted as longer or more intense rainy winter‐spring (Muñoz et al., 2015). Ethiopian stalagmites deposited during the Holocene and last Interglacial widely exhibit decadal‐scale variability in growth rate, the cause of which is uncertain but considered to be hydroclimatically determined (Asrat et al., 2018; Baker et al., 2010).…”

Section: Discussionmentioning

confidence: 99%

The Properties of Annually Laminated Stalagmites‐A Global Synthesis

Baker

Mariethoz

Comas-Bru

et al. 2021

Reviews of Geophysics

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Section: Discussionmentioning

confidence: 99%

The Properties of Annually Laminated Stalagmites‐A Global Synthesis

Baker

Mariethoz

Comas-Bru

et al. 2021

Reviews of Geophysics

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“…Laminated calcite or aragonite deposits, have been reported typically from caves (Baker et al ., ; Romanov et al ., ), but also from tufa (Matsuoka et al ., ; Kano et al ., ; Kawai et al ., ) and travertines (Okumura et al ., , , ,b), among others. In the case of speleothems, these laminated facies show differences in petrology, mineralogy, trace elements, stable isotopes and organic matter (Roberts et al ., ; Dasgupta et al ., ; Fairchild & Baker, ; Muñoz et al ., ). These laminae, occurring at different timescales, are annual in some regions with significant annual variations in processes that affect formation (Genty et al ., ; Tan et al ., ), such as dripping rates, cave water chemistry, fluctuations of the cave atmosphere, affecting CO 2 concentration, humidity or air flow.…”

Section: Interpretation and Discussionmentioning

confidence: 97%

Sedimentology and geochemistry of a human‐induced tufa deposit: Implications for palaeoclimatic research

et al. 2018

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Geochemical variations across laminated tufas and travertines may reflect the growth style of the carbonate build-up and not just climate-related changes. This work presents the study of a carbonate deposit, formed on a ravine wall in Gran Canaria Island (Spain), from a broken pipe system used for irrigation of banana plantations. The deposit is a few tens of metres long and has a stepped morphology formed by successive cascade-barriers and pools. The main facies are framestones of coated stems, laminated bindstones, phytoclastic wackestones and silty mudstones, all of which display micritic or coarse crystalline textures. Lamination from a framestone with coarse crystalline texture was studied from a petrological-sedimentological and geochemical perspective, and water palaeotemperatures were calculated. Lamination displaying five orders of magnitude, from daily to annual or higher, was controlled by the discontinuous supply of water. Lamination consists of crystalline laminae-discontinuity couplets at all observed scales. Estimated mean precipitation rates are 0Á7 mm year À1 , but discontinuity of sedimentation at all lamination orders may have involved greater precipitation rates. Whereas elemental geochemistry suggests variable conditions not far from chemical equilibrium, stable isotopes suggest that calcite precipitated under disequilibrium conditions. However, the small dimensions of the deposit and the relatively high flow velocities allowed lack of d 13 C and d 18 O isotope fractionation in CO 2 -HCO À 3 nor in HCO À 3 -calcite, leading to independent temperature calculations, both with mean values of 25°C. Isotopic trends found throughout lamination cannot be explained by strong changes in water temperature nor in d 13 C DIC or d 18 O w . The correction made to eliminate these isotopic trends yielded narrower temperature ranges. This paper discusses the accuracy of temperature estimations despite the difficulties coming from disequilibrium and how isotopic trends through time could be explained by the growth of the deposit and not by climate-related changes.

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“…Visible pictures do not require any additional treatment, as is shown in Figure 3. The L * a * b * values (colour coordinates) are at the scale of uniform colour defined by the Commission Internationale de l'Eclairage (CIE; Muñoz et al, 2015). L * corresponds to lightness and ranged in value from 0 (black) to 100 (white).…”

Section: Methodsmentioning

confidence: 99%

Exploring a Mallorca cave flooding during the Little Ice Age using nondestructive techniques on a stalagmite: micro-CT and XRF core scanning

Cisneros,

Cacho,

Frigola

et al. 2023

Quat. res.

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This study focuses on characterizing a discontinuity within the Seán stalagmite (4.75–7.75 cm) by means of two nondestructive techniques: (1) high-resolution micro-computed tomography (micro-CT) and (2) X-ray fluorescence (XRF) core scanning (XRFCS). Micro-CT was used to study the stalagmite density, and XRFCS was applied to obtain the qualitative elemental composition and colour measurements. The new data obtained from nondestructive techniques have been combined with previously published geochemical data and fabric determinations from the same stalagmite found in Sa Balma des Quartó cave in Mallorca. The two methodologies applied in the present study have improved the characterization of the distinctive horizon. The micro-CT images identified the layer as a minor event due the high air content. The distinctive horizon is characterized by a high Ti-content, indicating the arrival of terrigenous particles. Based on those observations, together with the fact that the micrite layer appears filling the gaps between the older columnar fabric, we argue that the micrite layer may represent a major flooding event inside the cave after the year 1616 ± 23 CE and before the year 1623 ± 28 CE, which can be related to an extreme rainfall event. This hypothesis is further supported by the observed cave flooding during the autumn of 2018.

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Solar influence and hydrological variability during the Holocene from a speleothem annual record (Molinos Cave, NE Spain)

Cited by 17 publications

References 43 publications

The Properties of Annually Laminated Stalagmites‐A Global Synthesis

The Properties of Annually Laminated Stalagmites‐A Global Synthesis

Sedimentology and geochemistry of a human‐induced tufa deposit: Implications for palaeoclimatic research

Exploring a Mallorca cave flooding during the Little Ice Age using nondestructive techniques on a stalagmite: micro-CT and XRF core scanning

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