222
C. M. YONQE
sc
"P
Fro. 3. Generalized sketch of seaward face and top of reef on windward side of Bikini
Atoll. AR, algal ridge; B. buttrewe or spurs; C, coral of reef flat; 0. groovee;
LTL. low tide level; SC, surge channele; T, terrace (about 10 fathom). (After
Munk and Sargent, 1954.)
A
B
C
ho, 4. Jhgrttiw illiiN1rutiny fornratiorr of room and pillar structures. raft, viewed froin
abovo; right, viowod in section. A, ~JOSSON of I'ootolithon; 1%. shelving and labrul
growth in surf zone ; C, development of now reof floor, with roortl rrcd I,illar wfr111:.
ture below; L, low tide level. (After Trsr:ey et ul., 1948.)