... and Helminthoidichnites were probably nematodes that grazed on organic-rich muddy sediments with abundant disseminated pyrite associated with Kinneyia-like and other problematic wrinkle structures, suggesting sulfur-cycling chemosynthetic microbial communities originated during interturbidite phases. The rhythmical...

... assemblages in interturbidite beds. Turbidite bed frequency-size statistics show a power-law distribution, implying that during such periods (particularly NP 12), the depositional system temporarily reached a self-organized critical state. The evolution of the system to critical state appears to be mainly...

...: a turbidite facies consisting of incomplete Bouma sequences, interturbidite shales, and disordered conglomerates; and a fluvial-deltaic facies consisting of well cross-bedded,, nearshore marine sandstones and fluvial conglomerates, nonmarine to shallowmarine shales, and marine limestones. In several areas...

...Mehrtens Charlotte Abstract Bioclastic turbidites are identified and described from the Denley Limestone (Trenton Group) in the Mohawk Valley, New York. These turbidites are recognized by the repetitive Bouma sequences within limestone beds separated by shale interbeds interpreted as interturbidite...

... contemporaneous acid volcanism. Features of the interturbidite chalks and marls, including the absence of benthonic foraminifera, demonstrate slow deposition in relatively deep water, whereas the stratigraphically condensed chalks of North Troodos accumulated slowly in shallower water. General field relationships...

...), and shallow outlets (lower right) of P. minimum subject to stretching (Str) and smoothing (Smo) induced by interturbidite bottom currents; note preservation of delicate structures and the step; sample MA211c, Alpe di Poti (Arezzo area). C) Deep (dpm, upper left) and shallow (shm, lower left and center...

...Fig. 5. Representative examples of facies and facies associations. (A) Slump bed (F7) overlying thin-bedded, mudstone-rich turbidites (F1/F2) representative of FA6. (B) Thick-bedded turbidites and interturbidites (F1/F4) with a 12 cm thick bed of volcanic ash (F5) representative of FA3...

... divisions ( Bouma 1962 ). We use T F to represent interturbidite or “non-turbiditic mudstone deposits”, which most workers include within the T E division; T F embraces bottom-current reworked fine-grained sediment of turbiditic, pelagic, or hemipelagic origin (cf. Hesse 1975 ). Paleoflow directions...

.... , and Crossley , J.D. , 1980 , Interturbidite bottom current orientation from trace fossils with an example from the Silurian flysch of Wales : Journal of Sedimentary Petrology , v. 50 p. 821 - 830 . Fletcher , T.P. , and Collins , D.H. , 1998 , The Middle Cambrian Burgess Shale and its...

...Figure 3. Recurrence interval distributions. Thick gray lines and gray shading show the distribution of earthquake recurrence intervals and 95% confidence level (Kolmogorov-Smirnov two-sided statistics). (a) Interturbidite thickness ( Adams and Weichert, 1994 ). (b) Coastal subsidence records...

... covered, smothered, and felled the epibenthic fronds, and their fossils are preserved on the top surfaces of the interturbidite beds immediately under a layer of volcanic ash ( Seilacher, 1999 ; Conception-style preservation of Narbonne, 2005 ). Labile minerals within the ash allowed for rapid...

... to be annual by correlation with rainfall totals and tree rings (Soutar & Crill 1977). Interpretation The laminated hemipelagite is interpreted as interturbidite sediment that formed the hemipelagic background deposit in the basin, following similar interpretations by Cummins (19596) and Cave (1979) in Wales...

..., with less common b-c sequences. Shale fragments occur only as clasts at the bases of graded units. Burrowing is rare but a branching Chondrites-like burrow occurs in the shale interturbidites. Although this is not a thick unit it has all the characteristics of proximal turbidites and may be part of a small...

... ) will primarily utilize the turbidite subdivisions of Bouma (1962) : T a , massive or graded sandstone; T b , plane parallel laminae; T c , ripples, wavy or convolute laminae; T d , upper parallel laminae; and T e , interturbidite mudstone. The turbidite subdivision of Lowe (1982) for high-density sandy...

... Formation is dominated by fine to medium-grained turbidites interspersed with thin interturbidite siltstone beds that contain the fossil horizons ( Narbonne et al., 2001 ; Wood et al., 2003 ). These fossil beds are covered by a veneer of volcanic ash, which smothered the frondose organisms and accelerated...

... of the Malverns). In the deep basinal environments of SE Ireland, to the W of the Irish Sea landmass, interturbidite mudstones of probable early upper Cambrian age are black and devoid of bioturba- tion, indicating stagnation of the deep water (e.g. Askingarran Formation). The black pelites of Cam- brian parts...

... ). The turbidites are primarily Bouma T (C)DE beds (Bouma, 1962 ), with ‘T F ’ interturbidite, laminated mudstone deposits from the low energy intervals between turbidity currents (e.g., Hesse, 1975 ; Wood et al., 2003 ). The absence of wave-generated structures or evidence of exposure in several kilometers...