Massive Australian Precambrian/Cambrian Impact Structure Massive Australian Precambrian/Cambrian Impact Structure The Massive Australian Precambrian/Cambrian Impact Structure also known as MAPCIS is a proposed impact structure based upon arguments presented by Daniel P. Connelly at Geological Society of America meetings. Its center is located approximately equidistant between Uluru (Ayers Rock) and Mount Conner in Australia's Northern Territory. The structure is approximately in diameter. However, a hypothetical outermost ring in diameter is claimed to be the result of undefined far field stresses. Connelly argues that the age of this hypothetical impact is approximately 545 mya which puts it just before the Cambrian explosion (542 mya) of the
Subjunctive by attraction only about 37% of all the clauses dependent upon subjunctives. When these favoring conditions do not exist, the dependent clause stands in the indicative, unless the clause would regularly stand in the subjunctive for some other reason (purpose, result, etc.). Subjunctive by attraction In Latin grammar, the subjunctive by attraction (or attracted subjunctive) refers to uses of the subjunctive mood as the result of "attraction" or "assimilation" to another subjunctive or equivalent imperative. The name also applies to subjunctives used when a subordinate clause is "so closely connected with an infinitive as to form an integral part of" it. The