A sliver full of history

A sliver full of history

Garnet lherzolite • James St. John (CC BY 2.0)

Originally published 12 February 1990

In an essay pub­lished after her death, nov­el­ist Vir­ginia Woolf wrote about spe­cial “moments of being” that some­times inter­rupt the gray, non­de­script “cot­ton wool” of every­day life. One of those moments occurred as she was look­ing at a flower in a gar­den at St. Ives, in Eng­land. It was an ordi­nary plant with a spread of green leaves. She looked at the flower and said, “That is the whole.”

It had sud­den­ly occurred to her that the flower was part of the earth, part of every­thing else that was. The real­iza­tion came, she said, as a ham­mer blow, and from it emerged a phi­los­o­phy: Behind the cot­ton wool is hid­den a pat­tern. The whole world is a work of art and we are part of it.

It would be easy to dis­miss this rev­e­la­tion as so much sen­ti­men­tal­i­ty, but Vir­ginia Woolf was any­thing but sen­ti­men­tal. Many of her moments of being brought with them a pecu­liar hor­ror. For her, the recog­ni­tion that we are at one with the world could be a source of both exhil­a­ra­tion and despair.

Woolf’s inter­est in the con­nect­ed­ness of things was not that of a mys­tic, but of a writer. “We are the words,” she wrote, describ­ing the expe­ri­ence of the flower. “We are the music; we are the thing itself.”

Breaking connections

The sci­en­tist is no less sen­si­tive than the writer to the con­nect­ed­ness of things, to the pat­tern hid­den behind the cot­ton wool. But in prac­tice, sci­ence works by break­ing con­nec­tions, by iso­lat­ing, by frac­tur­ing the world into a myr­i­ad parts like a shat­tered crys­tal. What is the lab­o­ra­to­ry bench but a bare are­na for iso­lat­ing one thing from the rest of the world? What is an exper­i­ment but an attempt to reduce the many vari­ables in expe­ri­ence to one?

This shat­ter­ing of the world into iso­lat­ed parts may account for the alien­ation of pop­u­lar cul­ture from sci­ence. We val­ue whole­ness. We thrive on those moments of being when we sense the com­plete­ness of things. “Whole­ness,” wrote Vir­ginia Woolf, “means that [expe­ri­ence] has lost its pow­er to hurt me.”

Most peo­ple respect sci­ence. They know that our health and eco­nom­ic well-being depend in large mea­sure on sci­en­tif­ic knowl­edge of the world. At the same time, they dis­trust sci­ence. They find it reduc­tion­ist, frag­ment­ing, remote from expe­ri­ence, and espe­cial­ly remote from those spe­cial moments when we glimpse some­thing whole and entire.

But sci­ence too can pro­vide spe­cial moments when the whole­ness of things becomes appar­ent. As I write, I am look­ing at the cov­er of the June 23, 1989, issue of Sci­ence. It is a pho­to­graph of a gar­net crys­tal shaped like a pais­ley swirl, about the size of a bot­tle cap but enlarged to fill the page. The crys­tal is embed­ded in a matrix of ancient meta­mor­phosed gran­ite bro­ken from a moun­tain­side in Ver­mont. The gar­net crys­tal is a frag­ment of a moun­tain that embod­ies the his­to­ry of the moun­tain itself.

Geol­o­gists John Chris­tensen, John Rosen­feld, and Don­ald De Pao­lo of the Uni­ver­si­ty of Cal­i­for­nia extract­ed the gar­net from the moun­tain­side where it had been exposed by eons of ero­sion. They sliced the crys­tal into thin seg­ments and used radioac­tiv­i­ty to mea­sure the ages of seg­ments along the sweep of the “pais­ley” swirl. The lit­tle cap-sized gar­net grew at a rate of about 1.7 mil­lime­ters per mil­lion years for 10 mil­lion years.

Deep in the earth

All of this hap­pened deep in the earth as the ances­tral Green Moun­tains were being thrust upwards, about 380 mil­lion years ago. At that time, the drift­ing con­ti­nents of north­ern Europe and Africa were approach­ing North Amer­i­ca from the south. The result­ing col­li­sions would form the super­con­ti­nent geol­o­gists call Pangaea.

The squeeze of slow­ly con­verg­ing con­ti­nents fold­ed the rocks of Ver­mont into an S‑shaped loop called a nappe (from the French for “table­cloth”). Mean­while, the gar­net crys­tal was grow­ing from a reser­voir of molten min­er­als, adapt­ing its shape to stress­es in the rock. The pais­ley shape of the crys­tal is a minia­ture image of what was hap­pen­ing to the moun­tains themselves.

The ancient moun­tains of New Eng­land are now almost gone, erased by ero­sion, but the sur­viv­ing gar­net crys­tal enables geol­o­gists to deduce the rate at which those moun­tains were heaved upwards, stretched, fold­ed, and implant­ed with gran­ite. The crys­tal is a minia­ture record of 10 mil­lion years of con­ti­nen­tal col­li­sion and moun­tain build­ing — 10 mil­lion years of the geo­log­ic his­to­ry of New Eng­land. It is not quite William Blake’s uni­verse in a grain of sand, but close to it.

It is part of the con­nect­ed­ness of the world that the whole is very often con­tained in the part. That much, at least, mys­tics, writ­ers, and sci­en­tists have in com­mon. See­ing the pho­to­graph of the gar­net on the cov­er of Sci­ence was a kind of moment of being, a real and present image of colos­sal geo­log­i­cal events that I had pre­vi­ous­ly imag­ined only in my mind’s eye. I looked at the pho­to­graph and said, “That is the whole.”

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