Table 1. Base data for peat and shells. MLW, mean low water; n.d., no data. Depth (m) Location Material North vecst Below®“a ne (MLW) G2198 El Gosnold 2198 Explorer 1 Wood Matrix RL 1 Ruth Lea t Wood BT9A Bell Telephone 9A Debris RL2 Matrix 40°59’ 37°38’ 41°09’ 41°09’ 69°O1’ 74°30’ 68°43’ 100,000 Matrix 41°06’ 69°42’ —40 0 Capt. Norman Lepire 500 Matrix Matrix 71°52" 72°40’ 76°06’ 76°06’ 69°30° 70°38" 72°18" 70°55’ —33 —28 —27 —726 —20to —27 —18 —10 —8 0 0 10.7 6.1 0 13 15 0 Yale University Bur. Comm. Fisheries Bridge tests Bridge tests Capt. Norman Lepire E. S. Deevey J. P. Schafer E. S. Barghoorn 5 10 ? ? 1000 ? ? ? Chesapeake Bay Chesapeake Bay Ruth Lea 3 Oyster Pond 2 Rogers Lake, Conn. New Bedford, Mass. Matrix Matrix Matrix Debris Debris Matrix BARN Barnstable core 23 Matrix 41°43’ 70°22" Matrix 42°20° 71°06! CEN BOS ZC TB SQ Matrix Oyster Pond 1 Debris Centerville, Mass. Boston Commons garage Zacks Cliff Matrix Wood Debris Totoket Bog, Conn. Squibnocket Cliff Debris Matrix 40°48’ 42°21’ 41°33° 41°38’ 42°21’ 41°20' 41°20’ 41°18" 69°42’ 73°50° 71°05" 70°38 70°21’ 71°04’ 70°50’ 72° 49' 70°47 —34 —8 —8 ? 4 Columbia University E. S. Barghoorn 8.3 P. Butler —5 2 C. A. Kaye +6 +9 8 3 —§ —4 —2 +4 Sampler 2.3 4 8 8 Rock dredge 300 Capt. Norman Lepire M 28 B3 RL 3 OP 2 ROG NB Boston (Prudential Bldg.) 10 Tim Furtado Robert Allen 41°18’ 40°43’ 36°59’ 36°59’ 41°02’ 41°33’ 44°21’ 41°38" P W.H.O.L-U.S.G5S. 0.4 Matrix OP 1 0 0 Long Island Boylston Street fish weir 0 —59 LI BS —64 to —68 —43 Wood A. E, Verrill 1874 Albatross IV 63-7 (157) Peat 73°42’ Ruth Lea 2 Vv AL woe 39°00" 41°06" 68°43’ —82 Source Qs Ne Ref. surface 10 ? ? ? E, §. Deevey ? A. C. Redfield C. A. Kaye C. A. Kaye ? ? ? E. 8. Deevey C. A. Kaye ? 1,320 + 250 W-2001 13,500 + 350 W-2014 11,000 + 350 W-1491 Scallop dredge 10,630 + 300 W-1736 Boring 11,950 + 200 L.-606A (27) ML-91 ML-89 W-1735 Y-1459 ¥-950/1 (28) (28) 4,150 + 130 O-1127 (15) 5,480 + 120 W-676 (32) 3,850 + 130 O-1124 (33) Y¥-446A W-710 (34) (18) Scallop dredge Scallop dredge _ Corer Biology dredge Otter trawl Boring Boring Scallop dredge Boring Boring Boring Excavation Boring Boring Excavation Boring Excavation Sea cliff Boring ? 10,000+ Sea cliff n.d. n.d. 41,090 + 300 15,280 11,590 8,620 11,750 14,240 n.d, nd. + 200 + 150 + 300 + 300 + 740 4,450 + 130 3,420 + 120 5,500 + 300 12,170 + 300 15,300 + 800 15,090 + 160 12,700 + 300 W-1737 0-475 Y-1663 W-586 W-99i W-1187 (72) (29) (30) (37) (29) (15) (33) (78) Crassostrea virginica (Gmelin) D 60 D 26 S 186 D47 AEV1. IN 1 D 45 $210 D7 M 27 MOD Delaware 60-7 Delaware 26 S 186 Delaware 47 A. E. Verrill 1 Invader 1 Delaware 45 $210 Delaware 7-1 Chesapeake Bay Chesapeake Bay 37°24' 74°39" — 64 38°49’ 42°05’ 73°39’ 67°15’ —55 —53 41°18’ 71°00’ —34 40°40’ 40°59’ 40°43' 41°55’ 36°09" 36°59’ 38°33’ 71°59" —51 69°44’ 72°25" 67°35" 75°20° 76°06' 76°13’ —45 —37 —46 —33 —21 —2 69°30’ —47 0 0 0 0 0 0 0 0 0 ? 0 Bur. Comm. Fisheries Scallop dredge Bur. Comm. Fisheries Scallop dredge Bur. Comm. Fisheries Canadian Fisheries Board Marine Biclogical Lab. Capt. Norman Lepire Bur. Comm. Fisheries Canadian Fisheries Board Bur. Comm. Fisheries Bridge tests Harvard University Scallop dredge Scallop dredge Biological dredge 9,600 + 600 9,780 + 400 10,600 + 130 10,850 + 500 9,300 + 250 Otter trawl Scallop dredge Scallop dredge Scallop dredge Boring Hand 7,310 + 9,920 + 10,300 + 8,130 + 8,135 + Modern 300 400 150 400 160 Boring 11,465 + 400 L-948 W-1403 5-186 W-1401 W-2013 W-1981 W-i400 §-210 W-1402 ML-196 W-1399 (22) (23) (22) (225 (22) (28) (22) Crepidula fornicata (L) TY 3 Texas Tower 3 41°01" 29 J. M,. Zeigler 1-852 (13)(35)