FIGURE 2. The west baulk of the excavations at Mata Menge, showing the locations of fission-track samples MM1 and MM2 (marked by plus symbols).
From the following article:
Fission-track ages of stone tools and fossils on the east Indonesian island of Flores
M. J. Morwood, P. B. O'Sullivan, F. Aziz and A. Raza
Nature 392, 173-176(12 March 1998)
doi:10.1038/32401
Three main stratigraphic units are evident. Unit A is a layer of weathered sandstone and top soil containing stone artefacts. A1 is gravel-rich; A2 is an in situ homogeneous, coarse sandstone; A3 is top soil. Unit B comprises layers and lenses of white tuff and tuffaceous sandstone flow structures, which predominate towards the base. The flow structures contain more fragmented fossils and all stone artefacts identified in the section. B1 is a white tuff; B2 is a light–grey tuffaceous sandstone; B3 is a dark–grey tuffaceous sandstone; B4 is a light–grey tuffaceous sandstone; B5 is a brown–grey sandstone; B6 is a dark–grey sandstone (similar to B3 but with inclusions); B7 is a coarse-grained, yellow–grey sandstone. Unit C is a pink tuff, which does not contain fossils or stone artefacts. The section around the trench is cut back 50 cm from the main face.
