Six stalagmites were collected from BG (39°32′N, 08°47′W; 420 m a.s.l.), a cave in west-central Portugal near the town of Alvados, 30 km from the Atlantic Ocean (Figure 1). The region surrounding BG is characterized by warm and dry summers and cool and wet winters typical of the Mediterranean climate. (BG means Burraca Gloriosa, fz)
The cave is ~35 m long (Figure 1) and hosted by Middle Jurassic limestone in the Estremadura Limestone Massif, a topographically distinct region in central Portugal.

The six stalagmites were collected at the bottom of the cave, ~30 m from the cave entrance (Figure 1). Three stalagmites (BG063 (29.5 cm), BG121A (23.0 cm), and BG121B (16.4 cm)) had grown on the cave floor at the base of the loft and three others (BG136 (43.7 cm), BG135 (51.4 cm), BG134 (9.2 cm)) grew in a loft area ~4 m above the floor (Figure S1A and B, available online). Two stalagmites, BG136 and BG134, were actively growing when collected.

Rapporti isotopici in 6 stalagmiti di una grotta vicino ad Alvados, Portogallo.
Tatcher et al., 2020. Tatcher et al., 2020. Hydroclimate variability from western Iberia (Portugal) during the Holocene: Insights from a composite stalagmite isotope record. The Holocene, 30 (7), 966-981, 2020. https://doi.org/10.1177/0959683620908648

I dati usati sono in Table1.


fz 11.7.20. Upadated: 12.7.20