'relict' is a correct and usable word in written English.
It is an adjective that means showing the characteristics of something that has survived from an earlier period in time or something that has been left undisturbed. For example, you might say, "The relict forest was untouched by man for centuries."
Perhaps the rounding up of errant Alpine travellers is a distant relict of gathering sheep.
The former is the daughter of Sheikh Mujib ur Rahman, the country's first prime minister, assassinated in 1975; the latter the relict of President Zia Rahman, assassinated six years later.
Subsequently, within the past 10,000 years, the Arctic Ocean rose and advanced over a frozen landscape to produce a degrading relict subsea permafrost.
Mountainous terrain can retain ancient climatic conditions making possible, for example, the survival of relict species and the relative inaccessibility of the higher elevations to humans has helped preserve more of the vegetal patterns of the past.
When climate in a region changes, elimination of relict landforms and deposits causes a disequilibrium phase, which is followed by a dynamic equilibrium phase as new geomorphic equilibria are established.
Evidence of secondary origin includes relict structures of allochems such as skeletal fragments and oöids preserved entirely within chert nodules.
Some, like the Solomon's seal whose snake-like shoots we found forcing their way through the silt left by winter floods, may well be relicts from gardens of water mills that disappeared long ago.
The oldest rocks metamorphic units of the late Paleozoic Era (about 300 to 250 million years ago), with their continental sedimentary cover containing plant remains represent the relicts of the ancient continental crust of Gondwanaland and are found in small outcroppings.
Typical Triassic lineages were mostly relicts from the latest Permian.
In northwestern Scotland there also is a north south-trending belt of Proterozoic reddish brownorth south-trendingglomerates that is abelt 1 billiof years old; those sediments may be the erosional Proterozoic molasse of a 1.2-billion-yeareddishrogenic brown of which there are a few relictsandstoneshe Canddonian belt of Sconglomerates
In contrast, southern Europe, although incorporating such relicts as massifs of Paleozoic rocks, is essentially a youthful world, not yet fully fashioned, as evidenced by continuing seismic disturbances.
