Biogenic Si concentrations range between 3.5 and 32 wt%, with episodic spikes of 32-47 wt%. There is a general trend toward decreasing weight percentage downcore (Tables T1, T2; Fig. F1). Fine-scale variability occurs over most of the core interval, although the amplitude of the variability generally decreases below 29 meters composite depth (mcd), with the exception of several large episodic spikes (Fig. F1). A turbidite sequence is coincident with the loss of variability at ~25-29 mcd (Fig. F1).
Our future work on this site will include applying an age model, calculating the mass accumulation rates (MARs), evaluating the spectral evolution of the opal MAR, and comparing our results to other records from this site.