Evening star., 1949-04-22
Eorth Holt Yeors
Older Thon Supposed
Uranium Dss,nsssratsoa in Rocks
Timed 10 Determine Aks.
6v Tkemss 4. Rsmy

a2 sASs@Ns ~ Hs@J
TIE earth Is saznsihaux rapes lsAa Aa1
LILLIAN years esSTT tran sAs e@~a deter
r.tnea ~ t2ss pa
TIE o3sr3t Evcxx ca thr n4AEska s2gt&ee
are gvAn1trs Ss s1ss as~e&aAea N..sua CaAlsa
ARIA @ scsthsTa 1snsicsA~-A ag~oxsznssssy
ssA+ao1 seAgs oa1sT IRAN ssass 3ss1ssa N
Aarvs4a - es.thvs3 RlssA&Ae waaegs Aave A&a
t9s2s c2st&sscts2gs ~ &sr pAsG
Ihc@e claims AFr u2&ar IN y cesnsn gGygze&-
t2aE 10 Ire NAtaaa4 Research ENs.sEsc4i Ca.
EusJtrs ess Measurement at Ceo&okas Tg-.e ~
Prof Arta&T tfa9Hses g. tas InNrrssls -
k&.ao4gkS- gVcag nleea A. asss " sAe &Cz 4a
Eosri1aass aattses8Asa hs eosas3gE4Ngs are
a@sra saa Er1rtsfrH.natAan agts tgss earssGR-
ia0a q! vaEaoas ssgoE1- Of tar .sase taken tor
gwen amounts ef &Taaigga IN rocks - Go.
snteEEa1s into leAe
Prof., Holmes figure fos IAr h4sna Clam
ROCKS IS ASA 600 oaa yvAFS, Re<leiss zK.lA-
Tons q! the kAFvl!2n rocks s3VeS = Is zTt IL
about J. s6s eea ooo yemra
These figures mean. Pro. Holmes sAyS
that such pefsods have elapsed since TIE
elements oaEiposlns these recKs were eguasnI
sogethef. which was about The ilns os Ire
original cooling O! The crust os the e8gta
into solid shell This. II s bx4ittea.
occurred very rapidly after tAs Ara, .esgna-
lion Of Tire planet
The neN asQge agrees cute Siascly Ntka
calculations of aStgouame.s GA the agr cs
the universe n rs present form TIE earth
appears 10 be coeFal With tie ssara and star
systems
Pref Holmes also sets up new time scale
for sealos lcal eraS BY his new calcu!at!og1S
He brings the late CamertAn. when llts IS
hrSt developing on earth. I'D 10 about
43o 600 on0 years ago The bcglanlng Of the
eocene, when llfs IN It's present gatrns
started. Is placed approximately Sseeo go
years N the pAst~-4a little earlier than sen.
orally has been estimated
Although applying only 10 the eaytha
crust. Prof Holmes says his ages cAnno, be
materially different from that O! the planet
itself.
One Of the worlds richest shark fisheries
has Just been discovered IN Arctic water
region a few hundred square miles In
area luss south O! Ellesmere Land and OF
the northwest coast Of Greenland Swarns
with the bis voractous Greenland shark,
according 10 reports 10 the Arctic Institute II
North America from Norwegian fsheflnea.
Shark fishing has become an Important
industry ourins the past decade because ot
the market for shark liver oil rlch IN Vita
min ID. 10 supplement cod liver oil Ihs
Greenland shark is the chief source
OF this oil
II II very ACIfe animal. reaching length
OF 25 feet with rows Of sharp teeth II does
not hesitate 20 attack an Arctic whale It's
pursuit Is quite perious
Norwegian shark fishers uSe 20 10 50 ton
boats. Entering an area where ahArks are
known TO be numerous they drop overheard
barrel filled with greaSe. pierced BY several
holes. and loaded down with stones This
drops 10 the bottom. The grease slowly
escapes and is carried for considerable dis.
tanees by currents
Sharks in the neighborhood. seentine prey,
flock around the barrel They are cauaht
on large hooks haited with seal meat and
attached TO chains, IL requires three or
four men 10 pull in a catch. Another man
stands ready with 2o-pound hammer with
which he strikes as soon as the sharks head
reaches the surface
Even with these precautions there are
occasional casualties. During the last few
years the North Atlantic and adjacent
Arctic waters have been rather thoroughly
explored for shark regions. for the catch has
been rapidly diminishing.
The Norwegian fishers reported that they
were able TO maintain a steady catch for
three months by following the retrcatlnT
summer Ice line up the Ellekmsre Land
coast. Raoio-telephone communication be-
tween ships made 1t possible 70 plot the
course Of the fish schools.