5AGreenish duck that could erupt at any moment! (5)[-----]
. O = duck (cricket). LIVE, of volcanoes.
6A
6AA stone found in dad's spaghetti? (5)[-----]
. Insertion of A + ST (stone abbr.) in PA (dad)
Down.
1D
1DOpportunity to carry on after shaky start (5)[-----]
. Carry on = COPE, after S = (S)haky start
2D
2Dand 4a. Knotted bloomers and platform heels for hippy exec, one appearing in Dynasty (5, 5)[-----]
4A
4ASee 2d.[-----]
. Cryptic def, "knotted bloomers". Platform = DAIS; YC = Heels to "hipp(y) exe(c)"; insertion of I (one) in HAN (dynasty) (Well done if you untangled that.)