104 THE ESSEX NATURALIST
2. THE BROXBOURNE SECTION OF 1947
Mr. Warren's account of this section, with explanatory
remarks by the author, has been mentioned above. The full
sequence is as follows :—
9. Soil and Marsh Clay with Unio in places.
8. Lens of cream-coloured calcareous matter encrusting
shells.
7. Peat (including sandy beds with shells).
6. Decayed peat.
5. Brown Loam.
4. Sand with Hazel nuts, etc.
3. Rearranged gravel with algal concretions.
2. Gravel.
1. Reading Beds.
Bed 2 is of the Ponders End Stage, Beds 3 and 4 of the
Rammey Marsh Stage, and the rest are of the Historical Stage.
Bed 8, not previously described, filled a hollow, cut in the
bed below, probably another 'scoured-out hollow.' The deposit
was exclusively of cream-coloured calcareous tufa with shells,
most of which were encrusted with or buried in the calcareous
matter. It was exactly comparable with the material from Bed
6 of the Rammey Marsh sequence [Hayward, 1957a, p. 43].
The fauna also agrees with that from the same stage. It
appears that it was derived from a local deposit of the Rammey
Marsh Stage and the absence of any extraneous material
suggests that the disturbance and re-deposition were rapid and
extremely local.
The faunal list from the locality contains more than fifty
species. It includes none of the new species introduced during
the Historical Stage so that Beds 5-9 were formed entirely by
the rapid re-sorting of previous deposits, belonging largely or
wholly to the Rammey Marsh Stage. For reasons of space, the
list is not given but it does not differ substantially from lists
previously published [e.g. Hayward, 1957a]. The specimens
from Beds 3-6 are largely in the British Museum (Natural
History), though in addition the author had a few specimens
presented to him by Mr. Warren. Beds 7 and 8 are above water
level, and material was collected by the writer.